WARRANT PURCHASE AGREEMENT


         WARRANT  PURCHASE  AGREEMENT (this  "Agreement"),  dated as of June 17,
1997,  between  Magellan  Health  Services,  Inc., a Delaware  corporation  (the
"Company"), and Crescent Operating, Inc., a Delaware corporation (the "Buyer").

         WHEREAS,  the Company  desires to sell to Buyer,  and Buyer  desires to
purchase  from the Company,  warrants to purchase  shares of common stock of the
Company, par value $.25 per share ("Common Stock"); and

         WHEREAS,   the  Company  and  Crescent  Real  Estate  Equities  Limited
Partnership ("Crescent") entered into that certain Real Estate Purchase and Sale
Agreement  dated  January  29,  1997 ("REIT  Purchase  Agreement"),  as amended,
pursuant to which  Crescent  agreed to purchase  certain real estate and related
assets from the Company; and

         WHEREAS,  the  Company  and  Crescent  also  agreed  to  certain  other
transactions  pursuant  to the  Transaction  Documents  (as  defined in the REIT
Purchase Agreement).

         NOW,  THEREFORE,  in  consideration  of the  premises  and  the  mutual
covenants and  agreements  herein  contained,  and intending to be legally bound
hereby, the Company and Buyer hereby agree as follows:


                                    ARTICLE I

                            TERMS OF THE TRANSACTION

         1.1  Agreement  to Sell and to  Purchase  Warrants.  At the Closing (as
defined in the REIT  Purchase  Agreement),  and on the terms and  subject to the
conditions  set forth in this  Agreement,  the Company shall sell to Buyer,  and
Buyer shall purchase from the Company,  warrants (collectively,  the "Warrants")
to purchase shares of Common Stock. The Warrants shall be exercisable during the
periods set forth on Annex 1 and shall  constitute  the right to  purchase  that
number of shares of Common Stock as set forth on Annex 1 (subject to  adjustment
from  time to time as  provided  in the  Warrants).  The  Warrants  shall  be in
substantially  the form set forth as Exhibit A hereto  (except for the number of
shares and the exercise periods which shall be in accordance with Annex I).

         1.2 Purchase Price and Payment. The parties hereto acknowledge that the
Purchase  Price for the Warrants  was made by them in arm's length  negotiation.
The  aggregate  purchase  price for the Warrants is Twelve  Million Five Hundred
Thousand  Dollars  ($12,500,000)  (the  "Purchase  Price").  The Purchase  Price
payable  by Buyer  for the  Warrants  shall be paid by  Buyer on or  before  the
Closing  Date  (as  hereinafter  defined)  in  immediately  available  funds  by
confirmed  wire transfer to a bank account to be designated by the Company (such
designation  to occur no later than the third  Business Day prior to the Closing
Date).

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         1.3      Defined Terms.  A list of terms used in this Agreement is set 
forth in Article XI.

                                   ARTICLE II

                            CLOSING AND CLOSING DATE

         The Closing of the transactions  contemplated hereby shall occur at the
time of the Closing of the REIT Purchase  Agreement and upon satisfaction of the
conditions  to  Closing  set forth  herein  and  therein.  The date on which the
Closing is required to take place is herein  referred to as the "Closing  Date."
All Closing transactions shall be deemed to have occurred simultaneously.


                                   ARTICLE III

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         The Company  represents  and warrants to Buyer,  as of the date hereof,
that:

         3.1  Corporate   Organization.   The  Company  is  a  corporation  duly
organized, validly existing, and in good standing under the laws of the State of
Delaware and has all  requisite  corporate  power and  authority in all material
respects to own, lease,  and operate its properties and to carry on its business
as now being  conducted.  No actions or  proceedings to dissolve the Company are
pending or, to the best knowledge of the Company, are threatened.

         3.2      Capitalization of the Company.

         (a) As of January 29, 1997, the authorized capital stock of the Company
consisted of (i) 80,000,000  shares of Common Stock,  of which, as of that date,
28,686,091  shares  were  outstanding  and  4,423,740  shares  were  held in the
Company's treasury,  and (ii) 10,000,000 shares of Preferred Stock,  without par
value,  of which,  as of that date, no shares are  outstanding.  All outstanding
shares of capital  stock of the Company have been  validly  issued and are fully
paid and  nonassessable,  and no  shares of  capital  stock of the  Company  are
subject  to, nor have any been issued in  violation  of,  preemptive  or similar
rights.  As of January 29, 1997, (i) an aggregate of 4,369,752  shares of Common
Stock were reserved for issuance  pursuant to stock  options  granted to certain
directors,  officers,  and employees;  (ii) an aggregate of 2,168,661  shares of
Common  Stock were  reserved  for  issuance  and  issuable  upon the exercise of
outstanding  warrants;  (iii)  certain  shares of Common Stock were reserved for
issuance upon the exercise of certain  purchase rights which become  exercisable
pursuant  to the  terms  of the  Rights  Agreement;  and  (iv) an  aggregate  of
2,831,739  shares of Common stock were reserved for issuance and issuable  under
the Exchange Agreement.



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         (b) Except as set forth above in  subparagraph  (a) of this Section 3.2
and as contemplated  by this  Agreement,  there are outstanding (i) no shares of
capital stock or other voting  securities of the Company;  (ii) no securities of
the Company  convertible  into or  exchangeable  for shares of capital  stock or
other  voting  securities  of the  Company;  (iii) no options or other rights to
acquire from the Company, and no obligation of the Company to issue or sell, any
shares  of  capital  stock or other  voting  securities  of the  Company  or any
securities  of the Company  convertible  into or  exchangeable  for such capital
stock or voting  securities;  and (iv) other than  employee  compensation  plans
based on the Company's earnings and executive officer employment agreements,  no
equity  equivalents,  interests in the  ownership or earnings,  or other similar
rights of or with respect to the Company.  There are no outstanding  contractual
obligations of the Company to repurchase, redeem or otherwise acquire any shares
of  Common  Stock or any  other  securities  of the type  described  in  clauses
(i)-(iv) of the preceding sentence.

         3.3  Authority  Relative  to  This  Agreement.  The  Company  has  full
corporate power and authority to execute, deliver, and perform this Agreement to
which it is a party and to consummate the transactions  contemplated hereby. The
execution,  delivery, and performance by the Company of this Agreement,  and the
consummation  by it of the  transactions  contemplated  hereby,  have  been duly
authorized by all necessary corporate action of the Company.  This Agreement has
been duly  executed  and  delivered  by the  Company  and  constitutes,  and the
Warrant,  when  executed  by the Company  will be, a valid and  legally  binding
obligation of the Company,  enforceable  against the Company in accordance  with
its  terms,  except  that  such  enforceability  may be  limited  by  applicable
bankruptcy, insolvency,  reorganization,  moratorium, and similar laws affecting
creditors' rights generally or by general principles of equity.

         3.4 Noncontravention.  The execution,  delivery, and performance by the
Company of this  Agreement  and the Warrants and the  consummation  by it of the
transactions contemplated hereby do not and will not (i) conflict with or result
in a  violation  of any  provision  of the  Company's  Restated  Certificate  of
Incorporation or the Company's  Bylaws,  as amended,  or the charter,  bylaws or
other governing instruments of any Subsidiary, (ii) conflict with or result in a
violation  of any  provision  of, or  constitute  (with or without the giving of
notice or the  passage of time or both) a default  under,  or give rise (with or
without  the  giving of notice or the  passage  of time or both) to any right of
termination,  cancellation,  or acceleration under, any bond,  debenture,  note,
mortgage,  indenture,  lease,  agreement,  or other  instrument or obligation to
which the  Company or any  Subsidiary  is a party or by which the Company or any
Subsidiary or any of their respective  properties may be bound,  (iii) result in
the creation or imposition of any Encumbrance upon the properties of the Company
or any Subsidiary,  or (iv) assuming  compliance with the matters referred to in
Section  3.5,  violate  any  Applicable  Law  binding  upon the  Company  or any
Subsidiary,  except, in the case of clauses (ii), (iii), and (iv) above, for any
such   conflicts,    violations,    defaults,    terminations,    cancellations,
accelerations,   or  Encumbrances  which  would  not,  individually  or  in  the
aggregate,  have a material adverse effect on the business,  assets,  results of
operations,  or financial condition of the Company and the Subsidiaries taken as
a  whole  or  the  ability  of  the  Company  to  consummate  the   transactions
contemplated hereby.


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         3.5   Governmental   Approvals.   No  consent,   approval,   order,  or
authorization of, or declaration, filing, or registration with, any Governmental
Entity is required to be  obtained or made by the Company or any  Subsidiary  in
connection with the execution,  delivery,  or performance by the Company of this
Agreement or the  consummation by it of the  transactions  contemplated  hereby,
other than (i) compliance with any applicable  requirements of the HSR Act; (ii)
compliance  with  any  applicable  requirements  of the  Securities  Act;  (iii)
compliance with any applicable requirements of the Exchange Act; (iv) compliance
with any applicable  state  securities  laws; and (v) such consents,  approvals,
orders,  or  authorizations  which,  if not  obtained,  and  such  declarations,
filings, or registrations which, if not made, would not,  individually or in the
aggregate,  have a material adverse effect on the business,  assets,  results of
operations,  or  financial  condition  of the  Company or on the  ability of the
Company to consummate the transactions  contemplated hereby. The representations
and  warranties  of the Company  contained in this Section 3.5,  insofar as such
representations  and  warranties  pertain to  compliance by the Company with the
requirements  of the Securities Act and applicable  state  securities  laws, are
based on the representations and warranties of Buyers contained in Section 4.5.

         3.6 Authorization of Issuance:  Reservation of Shares.  When issued and
delivered pursuant to this Agreement against payment therefor, the Warrants will
have been duly  authorized,  issued and delivered and will constitute  valid and
legally  binding  obligations of the Company  entitled to the benefits  provided
therein.  During the period  within  which the Warrants  may be  exercised,  the
Company will at all times have  authorized and reserved for the purpose of issue
upon exercise of the Warrants,  a sufficient number of shares of Common Stock to
provide for the exercise of the  Warrants.  All shares of Common Stock which are
issuable upon exercise of the Warrants (the "Warrant Shares") will, when issued,
be validly issued,  fully paid and nonassessable.  Upon exercise of the Warrants
the  issuance of the Warrant  Shares  will not be subject to any  preemptive  or
similar rights.

         3.7 SEC Filings.  The Company has filed with the  Commission all forms,
reports,  schedules,   statements,  and  other  documents  (excluding  exhibits)
required to be filed by it since  September 30, 1995 under the  Securities  Act,
the Exchange Act, and all other federal  securities  laws.  All forms,  reports,
schedules,  statements,  and other documents  (including all amendments thereto)
filed by the Company with the Commission since such date are herein collectively
referred to as the "SEC Filings." The SEC Filings,  at the time filed,  complied
in all material respects with all applicable  requirements of federal securities
laws.  None of the SEC Filings,  including,  without  limitation,  any financial
statements  or schedules  included  therein,  at the time filed,  contained  any
untrue  statement  of a  material  fact or omitted  to state any  material  fact
required  to be stated  therein  or  necessary  in order to make the  statements
contained therein, in light of the circumstances under which they were made, not
misleading  except  as the same was  corrected  or  superseded  in a  subsequent
document  duly filed with the  Commission.  The audited  consolidated  financial
statements  and  unaudited  consolidated  interim  financial  statements  of the
Company included in the SEC Filings present fairly in all material respects,  in
conformity with generally accepted accounting principles applied on a consistent
basis  (except as may be indicated in the notes  thereto and, in the case of the
unaudited  consolidated interim financial statements,  except to the extent that
preparation

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of such financial  statements in accordance with generally  accepted  accounting
principles  is  not  required  by  applicable  rules  of  the  Commission),  the
consolidated  financial  position of the Company as of the dates thereof and its
consolidated  results of  operations  and cash flows for the periods  then ended
(subject to normal  year-end  adjustments  in the case of any interim  financial
statements).

         3.8 Rights Plan. Based upon the  representation of Buyer in Section 4.6
hereof and relying upon the information in the most recent Schedule 13D filed by
Rainwater-Magellan Holdings, L.P. related to stock ownership in the Company, the
execution of this Agreement and the issuance of the Warrant Shares (assuming the
continued  validity of the  representation of Buyer in Section 4.6 hereof) shall
not cause an  issuance  of  certificates  within the meaning of Section 3 of the
Rights Agreement dated as of July 21, 1992, as amended by the First Amendment to
Rights  Agreement,  dated as of May 30, 1997 between the Company and First Union
National Bank of North Carolina (the "Rights  Agreement") or a Triggering  Event
as defined in the Rights Agreement.


                                   ARTICLE IV

                     REPRESENTATIONS AND WARRANTIES OF BUYER

         Buyer represents and warrants to the Company that:

         4.1      Organization.  Buyer is duly organized, validly existing, and
in good standing under the laws of the jurisdiction of its formation.

         4.2  Authority  Relative  to This  Agreement.  Buyer has full power and
authority to execute,  deliver, and perform this Agreement and to consummate the
transactions  contemplated hereby. The execution,  delivery,  and performance by
Buyer  of  this  Agreement,  and  the  consummation  by it of  the  transactions
contemplated hereby, have been duly authorized by all necessary action of Buyer.
This  Agreement has been duly executed and delivered by Buyer and  constitutes a
valid and legally  binding  obligation  of Buyer,  enforceable  against Buyer in
accordance  with its terms,  except that such  enforceability  may be limited by
applicable bankruptcy, insolvency, reorganization,  moratorium, and similar laws
affecting creditors' rights generally or by general principles of equity.

         4.3 Noncontravention. The execution, delivery, and performance by Buyer
of this Agreement and the  consummation by it of the  transactions  contemplated
hereby do not and will not (i)  conflict  with or result in a  violation  of any
provision of the charter,  bylaws, or similar organizational documents of Buyer,
(ii)  conflict  with or result in a violation of any provision of, or constitute
(with or without  the giving of notice or the passage of time or both) a default
under, or give rise (with or without the giving of notice or the passage of time
or both) to any right of termination,  cancellation,  or acceleration under, any
bond,  debenture,  note,  mortgage,   indenture,   lease,  agreement,  or  other
instrument  or  obligation to which Buyer is a party or by which Buyer or any of
its properties  may be bound,  (iii) result in the creation or imposition of any
Encumbrance  upon the  properties of Buyer,  or (iv) violate any  Applicable Law
binding upon Buyer, except, in the

                                       -5-





case of clauses (ii), (iii), and (iv) above, for any such conflicts, violations,
defaults,  terminations,  cancellations,  accelerations,  or Encumbrances  which
would not,  individually or in the aggregate,  have a material adverse effect on
the business,  assets, results of operations, or financial condition of Buyer or
on the ability of Buyer to consummate the transactions contemplated hereby.

         4.4 Governmental Approvals.  Other than any HSR Act filing, no consent,
approval,  order, or authorization  of, or declaration,  filing, or registration
with,  any  Governmental  Entity is  required to be obtained or made by Buyer in
connection  with  the  execution,  delivery,  or  performance  by  Buyer of this
Agreement or the consummation by it of the transactions contemplated hereby.

         4.5  Purchase  for  Investment.  Buyer  has  been  furnished  with  all
information  that it has requested  for the purpose of  evaluating  the proposed
acquisition of the Warrants pursuant hereto, and Buyer has had an opportunity to
ask questions of and receive answers from the Company  regarding the Company and
its business,  assets,  results of operations,  and financial  condition and the
terms and  conditions  of the issuance of the  Warrants.  Buyer is acquiring the
Warrants to be  purchased by it for its own account for  investment  and not for
distribution in any manner that would violate applicable  securities laws. Buyer
can bear the risk of an investment in the Warrants,  and has such  knowledge and
experience  in financial  and business  matters that it is capable of evaluating
the  merits  and  risks  of  a  prospective  investment  in  the  Warrants.  The
acquisition  of such  Warrants  by Buyer at  Closing  shall  constitute  Buyer's
confirmation  of the  foregoing  representations.  Buyer  understands  that such
Warrants  are  being  sold to it in a  transaction  which  is  exempt  from  the
registration  requirements  of the  Securities  Act,  and that,  in  making  the
representations and warranties contained in Section 3.5 pertaining to compliance
by the  Company  with the  requirements  of the  Securities  Act and  applicable
securities laws, the Company is relying, to the extent applicable,  upon Buyer's
representations set forth herein.

         4.6 No Other  Shares.  Except for such  rights as may be  conferred  on
Buyer by this Agreement, as of the date hereof, Buyer does not beneficially own,
directly or indirectly through any subsidiary,  or any affiliate of the Buyer in
which the Buyer  directly  or  indirectly  owns stock or equity  interests,  and
Crescent Real Estate Equities  Company does not own, any shares of capital stock
of the Company.


                                    ARTICLE V

                              ADDITIONAL AGREEMENTS

         5.1  Press  Releases.  Except as may be  required  by  Applicable  Law,
neither Buyer, on the one hand, nor the Company,  on the other,  shall issue any
press release with respect to this  Agreement or the  transactions  contemplated
hereby without the prior written consent of the other party (which consent shall
not be unreasonably  withheld under the  circumstances).  Any such press release
required by  Applicable  Law shall only be made after  reasonable  notice to the
other party.


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         5.2 Stock  Exchange  Listing.  The Company  shall use its  commercially
reasonable  best efforts to cause the Warrant  Shares to be approved for listing
on the New York Stock Exchange, subject to official notice of issuance, prior to
the date any such  Warrant  Shares  become  issuable  upon the  exercise  of the
Warrants.

         5.3      Registration Rights.

         (a) Registration of Warrant Shares.  At least 90 days prior to the date
on which the Warrant  Shares are  issuable  upon  exercise of the  Warrant,  the
Company  will  prepare and file one or more  registration  statements  under the
Securities Act, and use its  commercially  reasonable best efforts to cause such
registration  statements  to become  effective  as  promptly as  possible,  with
respect to the issuance of the Warrant  Shares upon exercise of the Warrants and
the resale of the Registrable Warrant Shares.

         (b)      Registration Procedures.  With respect to each registration 
statement filed in accordance with this Section 5.3 (the "Registration 
Statement"), the Company shall:

                  (i)  cause  the   Registration   Statement   and  the  related
         prospectus  and any  amendment  or  supplement,  (A) to  comply  in all
         material  respects with the applicable  requirements  of the Securities
         Act and under the rules and regulations promulgated thereunder, and (B)
         not to contain any untrue statement of a material fact or omit to state
         a material fact required to be stated  therein or necessary to make the
         statements therein not misleading;

                  (ii) prepare and file with the Commission  such amendments and
         supplements to the  Registration  Statement and the prospectus  used in
         connection  therewith,   and  upon  the  mandatory  expiration  of  the
         Registration Statement, one or more additional registration statements,
         as may be necessary to keep the Registration  Statement  effective on a
         continual  basis for so long as the Buyer or its  permitted  transferee
         owns any Underlying Warrant Shares; provided that the Company shall not
         be required to maintain the effectiveness of any Registration Statement
         filed  hereunder  for a period in excess of twelve years and sixty (60)
         days from the Closing Date;

                  (iii) furnish,  upon written  request,  to Buyer a copy of any
         amendment or  supplement  to the  Registration  Statement or prospectus
         prior to filing it after  effectiveness and not file any such amendment
         or  supplement  to which  Buyer shall have  reasonably  objected on the
         grounds  that  such  amendment  or  supplement  does not  comply in all
         material respects with the requirements of the Securities Act or of the
         rules or regulations promulgated thereunder;

                  (iv)   furnish  to  Buyer   such   number  of  copies  of  the
         Registration  Statement,  each  amendment and supplement  thereto,  the
         prospectus used in connection therewith (including, without limitation,
         each preliminary prospectus and final prospectus) and such other

                                       -7-





         document as Buyer may reasonably request in order to facilitate the 
         disposition of the Registrable Warrant Shares owned by Buyer;

                  (v) use its  commercially  reasonable best efforts to register
         or qualify all Registrable  Warrant Shares covered by the  Registration
         Statement under such other securities or blue sky laws of the states of
         the United  States as may be required  for the issuance and sale of the
         Registrable  Warrant Shares, to keep such registration or qualification
         in effect for so long as the Registration  Statement  remains in effect
         except that the Company  shall not for any such  purpose be required to
         qualify  generally  to do  business  as a  foreign  corporation  in any
         jurisdiction in which it is not and would not, but for the requirements
         of this Section 5.3, be  obligated  to be so  qualified,  or to subject
         itself to taxation in any such  jurisdiction,  or to consent to general
         service of process in any such jurisdiction;

                  (vi)  prior  to any  sale of the  Registrable  Warrant  Shares
         effected on a national  securities  exchange,  deliver to such national
         securities  exchange  copies of the prospectus to be used in connection
         with  the  offering  to  be  conducted  pursuant  to  the  Registration
         Statement;

                  (vii) upon discovery  that, or upon the happening of any event
         as a result of  which,  the  prospectus  included  in the  Registration
         Statement,  as then  in  effect,  includes  or in the  judgment  of the
         Company may include an untrue  statement of a material fact or omits or
         may omit to state  any  material  fact  required  to be  stated in such
         prospectus or necessary to make the  statements in such  prospectus not
         misleading in the light of the  circumstances  in which they were made,
         which circumstance requires amendment of the Registration  Statement or
         supplementation  of the  prospectus,  prepare  and file as  promptly as
         reasonably  possible a supplement to or an amendment of such prospectus
         as may be  necessary  so that,  as when  delivered  (if required by the
         Securities  Act) to a purchaser of  Registrable  Warrant  Shares,  such
         prospectus  shall not include an untrue statement of a material fact or
         omit to state a material fact required to be stated in such  prospectus
         or necessary to make the  statements in such  prospectus not misleading
         in the light of the circumstances in which they were made;

                  (viii) otherwise use its commercially  reasonable best efforts
         to  comply  with  all  applicable  rules  and  regulations   under  the
         Securities  Act  and,  in its  discretion,  to  make  available  to its
         securities  holders,  as soon as  reasonably  practicable,  an earnings
         statement  covering the period of at least twelve months,  but not more
         than  eighteen  months,  beginning  with the  first  month of the first
         fiscal quarter after the effective date of the Registration  Statement,
         which earnings  statement shall satisfy the provisions of section 11(a)
         of the Securities Act;

                  (ix) provide and cause to be  maintained a transfer  agent and
         registrar  for  all   Registrable   Warrant   Shares   covered  by  the
         Registration  Statement  from  and  after a date  not  later  than  the
         effective date of the Registration Statement;


                                       -8-





                  (x) use its  commercially  reasonable best efforts to list all
         Registrable Warrant Shares covered by the Registration Statement on any
         national  securities  exchange on which securities of the same class as
         the Registrable Warrant Shares are then listed;

                  (xi) after any sale of the Registrable Warrant Shares pursuant
         to this Section  5.3, to the extent not  prohibited  by law,  cause any
         restrictive  legends to be removed and any transfer  restrictions to be
         rescinded with respect to the Registrable Warrant Shares;

                  (xii) enter into such customary agreements (including, without
         limitation,  underwriting agreements in customary form, substance,  and
         scope) and take all such other  actions as the holders of a majority of
         the Registrable Warrant Shares being sold or the underwriters,  if any,
         reasonably  request in order to expedite or facilitate the  disposition
         of such Warrant Shares;

                  (xiii)  in  the  event  of the  issuance  of  any  stop  order
         suspending the effectiveness of the Registration  Statement,  or of any
         order  suspending  or preventing  the use of any related  prospectus or
         suspending  the  disqualification  of any Common Stock  included in the
         Registration  Statement for sale in any jurisdiction,  the Company will
         use its  commercially  reasonable  best efforts  promptly to obtain the
         withdrawal of such order; and

                  (xiv) use its  commercially  reasonable  best efforts to cause
         such Registrable  Warrant Shares covered by the Registration  Statement
         to be registered with or approved by such other  governmental  agencies
         or  authorities  as may be  necessary  to enable  the Buyer  thereof to
         consummate the disposition of such Warrant Shares.

         (c) Obligations of Buyer. The Buyer holding  Registrable Warrant Shares
shall furnish to the Company such information regarding the Buyer as the Company
may from time to time reasonably request in writing (and will notify the Company
of any changes in such  information)  and as shall be required by the Securities
Act in connection with such registration.

         (d)  Delay of  Sales.  During  any  period  in  which  the  Company  is
maintaining the  effectiveness  of a Registration  Statement for the Registrable
Warrant  Shares  pursuant to this Section 5.3, the Company shall have the right,
upon  giving  notice  to the Buyer  holding  Registrable  Warrant  Shares of the
exercise of such right, to require the Buyer not to sell any Registrable Warrant
Shares pursuant to such Registration  Statement for a period of time the Company
deems reasonably necessary,  which time shall be specified in such notice but in
no event  longer  than a period of 90 days,  if (i) the Company is engaged in an
offering  of shares by the  Company  for its own  account  or is  engaged  in or
proposes  to engage in  discussions  or  negotiations  with  respect  to, or has
proposed or taken a substantial step to commence, or there otherwise is pending,
any merger, acquisition, other form of business combination, divestiture, tender
offer,  financing or other  transaction,  or there is an event or state of facts
relating to the Company, in each case which is material to the Company (any such
negotiation,  step,  event or state of facts  being  herein  called a  "Material
Activity"), (ii) such Material Activity would, in the opinion of counsel for the
Company reasonably acceptable to Buyer,

                                       -9-





require disclosure so as to permit the Registrable  Warrant Shares to be sold in
compliance  with  applicable  law,  and  (iii)  such  disclosure  would,  in the
reasonable  judgment of the Company, be adverse to its interests in any material
respect.  The  Company  shall  have  no  obligation  to  include  in any  notice
contemplated  by this  subparagraph  (f) any reference to or  description of the
facts based upon which the Company is delivering such notice.

         (e)      Indemnification.

                  (i) The Company  shall  indemnify  and hold harmless the Buyer
         holding  Registrable  Warrant Shares and its directors,  Affiliates and
         officers,  and each other person, if any, who controls the Buyer within
         the meaning of the Securities Act against any losses, claims,  damages,
         liabilities  or expenses  (including  reasonable  fees and  expenses of
         counsel),  joint or several,  to which the Buyer or any such  director,
         Affiliate or officer or participating or controlling  person may become
         subject under the Securities Act or otherwise in connection  with or as
         a result  of a sale by the  Buyer of the  Registrable  Warrant  Shares,
         insofar as such losses,  claims,  damages,  liabilities or expenses (or
         related actions or proceedings)  arise out of or are based upon (i) any
         untrue  statement of any material  fact  contained in the  Registration
         Statement,  any  preliminary  prospectus,  final  prospectus or summary
         prospectus contained in the Registration Statement, or any amendment or
         supplement to the Registration  Statement, or any document incorporated
         by reference  in the  Registration  Statement,  or (ii) any omission to
         state in any such document a material fact required to be stated in any
         such document or necessary to make the  statements in any such document
         not misleading,  and the Company will reimburse the Buyer and each such
         director,  Affiliate,  officer,  participating  person and  controlling
         person for any legal or any other expenses  reasonably incurred by them
         in connection  with  investigating  or defending any such loss,  claim,
         damage, liability or expense (or action or proceeding in respect of any
         such loss, claim, damage,  liability or expense) which arises out of or
         is based upon an untrue  statement or omission made in the Registration
         Statement, any such preliminary prospectus,  final prospectus,  summary
         prospectus,  amendment or supplement except for any untrue statement or
         omission  made  in  reliance  upon  and  in  conformity   with  written
         information furnished to the Company by the Buyer or any such director,
         Affiliate, officer,  participating person or controlling person for use
         in the preparation of the Registration Statement.  Such indemnity shall
         remain in full force and effect regardless of any investigation made by
         or on  behalf of the Buyer or any such  director,  Affiliate,  officer,
         participating  person  or  controlling  person  and shall  survive  the
         transfer of Registrable Warrant Shares by the Buyer.

                  (ii) The Buyer shall  indemnify and hold harmless (in the same
         manner  and to the  same  extent  as set  forth in  clause  (i) of this
         subparagraph  (f)) the  Company,  each  director of the  Company,  each
         officer of the Company who shall sign the  Registration  Statement  and
         each other person,  if any, who controls the Company within the meaning
         of the  Securities  Act,  with  respect to any untrue  statement  in or
         omission from the Registration  Statement,  any preliminary prospectus,
         final  prospectus or summary  prospectus  included in the  Registration
         Statement,   or  any  amendment  or  supplement  to  the   Registration
         Statement, but only to the

                                      -10-





         extent that such statement or omission was made in direct reliance upon
         and in conformity with written information  furnished to the Company by
         the Buyer for use in the  preparation  of the  Registration  Statement,
         preliminary prospectus, final prospectus, summary prospectus, amendment
         or  supplement.  Such  indemnity  shall remain in full force and effect
         regardless of any investigation  made by or on behalf of the Company or
         any such director,  officer or controlling person and shall survive the
         transfer of the Registrable Warrant Shares by the Buyer.

                  (iii)  Indemnification under this Section 5.3 shall be made as
         set forth in Article IX hereof.

         (f)  Registration  Expenses.  All  expenses  incident to the  Company's
registration  of the  Registrable  Warrant Shares  pursuant to the provisions of
this Section 5.3,  including,  without  limitation,  all registration and filing
fees, fees and expenses of compliance with securities or blue sky laws, printing
and  engraving   expenses,   messenger  and  delivery   expenses  and  fees  and
disbursements  of counsel for the Company and all independent  certified  public
accountants,  underwriters  (excluding  underwriting  discounts  and any selling
commissions)  and any persons  retained by the Company (all such expenses  being
herein called "Registration Expenses"),  will be paid by the Company;  provided,
that, all expenses incurred by the Buyer holding  Registrable  Warrant Shares to
retain  any  counsel,  accountant  or other  advisor  will not be  deemed  to be
Registration Expenses and will be paid by the Buyer. The underwriting  discounts
or commissions and any selling  commissions  together with any stock transfer or
similar taxes  attributable to sales of the  Registrable  Warrant Shares will be
paid by the Buyer.

         5.4 Fees and  Expenses.  The parties  shall each pay their own fees and
expenses and those of their agents,  advisors,  attorneys and  accountants  with
respect to the negotiation and execution of this Agreement.

         5.5      Restrictions on Transfers: Restrictions on Exercise of 
Warrants.

         (a)      Restrictions on Transfer of Warrants and Warrant Shares.  
Subject to the provisions of subsections (b) and (c), without having obtained 
the prior written consent of the Company, the Buyer shall not:

                  (i)   sell or transfer any of the Warrants held by it to
any other person, except for Excluded Transfers (as defined below) or to a 
wholly owned Subsidiary; and

                  (ii) prior to the twelfth  anniversary  of the  Closing  Date,
         except  for an  Excluded  Transfer,  sell or  transfer  in a  privately
         negotiated transaction to a single purchaser and its Affiliates, or any
         "Group" (as such term is defined in Rule 13d-5(b)(1) under the Exchange
         Act)  any  combination  of  Warrants  and/or  Warrant  Shares,  if  the
         aggregate number of Warrant Shares and Underlying  Warrant Shares to be
         so transferred equals 5% or more of

                                      -11-





         the Common Stock then outstanding on a fully-diluted basis (i.e. 
         including all shares of Common Stock issuable under the terms of any 
         options, warrants and similar rights).

         (b)  Exceptions to Transfer  Restrictions.  Notwithstanding  subsection
(a), the Buyer may sell or transfer any of the Warrants and/or Warrant Shares to
any person pursuant to, as a result of, or in connection with (i) a tender offer
or an exchange offer approved by the Board of Directors of the Company; (ii) the
consummation of a merger (provided the Company is not the surviving  corporation
in such merger), consolidation, or a sale of all or substantially all the assets
of the Company;  or (iii) any other  "Fundamental  Change  Transaction" (as such
term is defined in the Warrant) (any transfer  pursuant to this Section  5.5(b),
an "Excluded Transfer").

         (c) Transferees.  During the period in which the restrictions set forth
in this Section 5.5 remain applicable, neither Buyer nor any transferee shall be
entitled to, directly or indirectly, sell or transfer any of the Warrants and/or
Warrant Shares in an Excluded  Transfer to any person who is not a party to this
Agreement,  unless the purported transferee executes an instrument acknowledging
that it is  bound by the  terms  of this  Section  5.5 and  such  instrument  is
delivered to the Company.

         5.6 Indemnification of Brokerage.  Each of the parties hereto agrees to
indemnify  and hold  harmless  each other  party from and  against  any claim or
demand for a commission or other compensation by any financial advisor,  broker,
agent, finder, or similar  intermediary  claiming to have been employed by or on
behalf  of such  indemnifying  party  and to bear  the  cost of  legal  fees and
expenses incurred in defending against any such claim or demand.

         5.7  Delivery of  Information.  The Company  will  deliver to the Buyer
promptly upon the filing thereof,  copies of all registration  statements (other
than the exhibits  thereto and any  registration  statements  on Form S-8 or its
equivalent) and reports on Forms 10-K (or their  equivalents)  which the Company
shall have filed with the Commission or any similar reports filed with any state
securities commission or office.

         5.8 Rule 144 and Rule 144A Information. With a view to making available
to the Buyer the benefits of Rule 144 and Rule 144A  promulgated  under the 1933
Act and any other  rule or  regulation  of the  Commission  that may at any time
permit the Buyer to sell  Common  Stock of the  Company  to the  public  without
registration, the Company agrees to:

                  (i)      make and keep public information available, as those 
         terms are understood and defined in Rule 144;

                  (ii)     file with the Commission in a timely manner all 
         reports and other documents required of the Company under the 
         Securities Act and the Exchange Act; and

                  (iii)  furnish to Buyer  forthwith  upon request (A) a written
         statement  by the  Company  that it has  complied  with  the  reporting
         requirements  of Rule 144, the Securities Act and the Exchange Act, (B)
         a copy of the most recent annual or quarterly report of the

                                      -12-





         Company and such other  reports and  documents  so filed by the Company
         under  the  Securities  Act and the  Exchange  Act and (C)  such  other
         information  as may be  reasonably  requested by each Buyer in availing
         itself of any rule or  regulation of the  Commission  which permits the
         selling of any such securities without registration; and

                  (iv)     comply with all rules and regulations of the 
         Commission applicable to the Company in connection with use of Rule 
         144A (or any successor thereto); and

                  (v) within five business  days of the  Company's  receipt of a
         request made by, or on behalf of, any prospective  transferee of who is
         a Qualified  Institutional Buyer (as defined in Rule 144A) and would be
         purchasing  Common  Stock of the Company in  reliance  upon Rule 144A),
         provide to such  prospective  transferee  copies of annual  audited and
         quarterly  unaudited  financial  statements  of the  Company  for it to
         comply with Rule 144A.

         5.9      Standstill.

         (a) General.  Buyer  agrees that during the four year period  ending on
the  anniversary  of the  Closing  Date,  it will  not,  and it will  cause  its
Affiliates  and  employees  (other than Richard E.  Rainwater,  John C. Goff and
Gerald W. Haddock) not to, purchase additional shares (excluding any acquisition
of shares of Common Stock or Equity Securities pursuant to warrants  outstanding
pursuant to that certain Stock and Warrant Purchase Agreement dated December 22,
1995 between the Company and Richard E.  Rainwater  and certain other buyers) of
the Company's  Common Stock (or other Equity  Securities)  so that Buyer and its
Affiliates and employees  collectively  own 20% or more of the Company's  Common
Stock then  outstanding;  provided,  however,  that Buyer and its Affiliates and
employees  shall  not be  deemed  to own 20% or more of the  Common  Stock  then
outstanding  solely by reason of the  Company's  purchase  of any  Common  Stock
unless thereafter Buyer and its Affiliates and employees purchase any additional
shares of Common  Stock  (excluding  any  acquisition  of  Warrant  Shares  upon
exercise of the Warrants, which shall not be restricted hereunder).

         (b) Additional Standstill Obligations. Buyer further agrees that during
the twelve year period  ending on the  anniversary  of the Closing Date, it will
not,  and it will cause its  Affiliates  and  employees  not to,  without  prior
Company consent,  (i) effect or cause to be effected any (A)  "solicitation"  of
"proxies"  (as such terms are used in the proxy  rules of the  Commission)  with
respect  to the  Company  or any  action  resulting  in such  person  becoming a
"participant"  in any  "election  contest"  (as such terms are used in the proxy
rules of the  Commission)  with  respect  to the  Company,  or (B) any tender or
exchange offer or offer for a merger, consolidation,  share exchange or business
combination  involving  the Company or  substantially  all of its  assets,  (ii)
propose any matter for submission to a vote of the  stockholders of the Company,
or (iii)  sell any  shares  of the  Company's  Common  Stock  (or  other  Equity
Securities) short.

         (c)   Amendments to Rights Agreement.  If the Company undertakes the
purchase of any Common Stock under circumstances in which any exercise of 
Warrants would be considered to

                                      -13-





cause Buyer and its Affiliates to become an "Acquiring  Person" under the Rights
Agreement,  the  Company  agrees to amend the  Rights  Agreement  to either  (i)
include  the  Buyer  and  its  Affiliates  in  the  definition  of  an  "Initial
Shareholder",  or (ii) change the definition of "Exempt Person" so as to exclude
any exercise of the Warrants from being considered as an additional  purchase of
shares of Common Stock for purposes of the Rights Agreement.  The Company agrees
to amend the Rights Agreement prior to Closing to the extent, if any,  necessary
to prevent any of the transactions  contemplated hereby,  including any issuance
of Warrant Shares,  to cause an issuance of certificates  under Section 3 of the
Rights Agreement or a Triggering Event under the Rights Agreement.

         5.10 Notices. The Company agrees to give the Buyer notice of any of the
events  referred to in Section  4(g) of the  Warrants at least five (5) Business
Days prior to any record date established or related to any such event which the
Buyer agrees to keep strictly  confidential  unless and until any such event has
been publicly announced.

         5.11 Survival of Covenants.  Except for any covenant or agreement which
by its terms  expressly  terminates  as of a specific  date,  the  covenants and
agreements of the parties hereto  contained in this Agreement  shall survive the
Closing without contractual limitation.


                                   ARTICLE VI

                    CONDITIONS TO OBLIGATIONS OF THE COMPANY

         The   obligations  of  the  Company  to  consummate  the   transactions
contemplated  by this Agreement  shall be subject to the fulfillment on or prior
to the Closing Date of each of the following conditions:

         6.1  Representations  and Warranties True. All the  representations and
warranties of Buyer contained in this Agreement shall be true and correct on and
as of the Closing Date in all material  respects,  except to the extent that any
such  representation  or warranty is made as of a specified  date, in which case
such  representation  or  warranty  shall have been true and  correct as of such
specified date, except to the extent contemplated by this Agreement.

         6.2 Covenants and Agreements Performed.  Buyer shall have performed and
complied with all covenants and agreements  required by this Agreement,  if any,
to be  performed  or complied  with by it on or prior to the Closing Date in all
material respects.

         6.3 HSR  Act.  To the  extent  that  the HSR Act is  applicable  to the
transaction  contemplated  herein,  all  waiting  periods  (and  any  extensions
thereof)  applicable to this Agreement and the transactions  contemplated hereby
under the HSR Act shall have expired or been terminated.


                                      -14-





         6.4 Legal  Proceedings.  No Proceeding  shall,  on the Closing Date, be
pending or threatened seeking to restrain,  prohibit, or obtain damages or other
relief in connection with this Agreement or the consummation of the transactions
contemplated hereby.

         6.5 Certificate. The Company shall have received a certificate executed
by a duly  authorized  person  on  behalf  of  Buyer  dated  the  Closing  Date,
representing  and  certifying,  in such  detail as the  Company  may  reasonably
request,  that the  conditions  set forth in Sections 6.1, 6.2 and 6.4 have been
fulfilled.

         6.6      Other Conditions.  All conditions to closing set forth in the
REIT Purchase Agreement have been satisfied or waived.

         6.7      Other Transactions.  All Transactions under the other 
Transaction Documents (as defined in the REIT Purchase Agreement) have been
consummated contemporaneously herewith.


                                   ARTICLE VII

                       CONDITIONS TO OBLIGATIONS OF BUYER

         The obligations of Buyer to consummate the transactions contemplated by
this  Agreement  shall be subject to the  fulfillment on or prior to the Closing
Date of each of the following conditions:

         7.1  Representations  and Warranties True. All the  representations and
warranties of the Company  contained in this Agreement shall be true and correct
on and as of the Closing  Date in all  material  respects,  except to the extent
that any such  representation  or warranty is made as of a  specified  date,  in
which case such  representation  or warranty shall have been true and correct as
of such specified date, except to the extent contemplated by this Agreement.

         7.2  Covenants  and  Agreements  Performed.   The  Company  shall  have
performed  and  complied  with all  covenants  and  agreements  required by this
Agreement to be performed or complied with by it on or prior to the Closing Date
in all material respects.

         7.3 Legal  Proceeding.  No  Proceeding  shall,  on the Closing Date, be
pending or threatened seeking to restrain,  prohibit, or obtain damages or other
relief in connection with this Agreement or the consummation of the transactions
contemplated hereby.

         7.4   Certificates.   Buyer  shall  have  received  a  certificate   or
certificates  representing  the Warrants,  in definitive form  representing  the
Warrants  purchased  by it, ( in  substantially  the form set forth in Exhibit A
hereto) registered in the name of Buyer and duly executed by the Company.

         7.5   Other Conditions.  All conditions to closing the REIT Purchase
Agreement have been satisfied or waived.

                                      -15-






         7.6   Other Transactions.  All Transactions under the other Transaction
Documents (as defined in the REIT Purchase Agreement) have been consummated 
contemporaneously herewith.


                                  ARTICLE VIII

                       TERMINATION, AMENDMENT, AND WAIVER

         8.1   Termination.  This Agreement shall be terminated and the 
transactions contemplated hereby abandoned if the REIT Purchase Agreement is 
terminated.

         8.2  Effect of  Termination.  In the event of the  termination  of this
Agreement  pursuant to Section 8.1, this Agreement shall become void and have no
effect,  except that the  agreements  contained  in this Section and in Sections
5.1, 5.4 and 5.6 and Article IX shall survive the  termination  hereof.  Nothing
contained in this Section shall relieve any party from  liability for any breach
of this Agreement.

         8.3 Amendment.  This Agreement may not be amended except by an 
instrument in writing signed by or on behalf of all the parties hereto.

         8.4 Waiver.  No failure or delay by a party  hereto in  exercising  any
right, power, or privilege hereunder shall operate as a waiver thereof nor shall
any single or partial  exercise  thereof  preclude any other or further exercise
thereof or the exercise of any other right, power, or privilege.  The provisions
of this Agreement may not be waived except by an instrument in writing signed by
or on behalf of the party against whom such waiver is sought to be enforced.


                                   ARTICLE IX

                  SURVIVAL OF REPRESENTATIONS; INDEMNIFICATION

         9.1 Survival.  The representations and warranties of the parties hereto
contained  in this  Agreement  or in any  certificate,  instrument  or  document
delivered  pursuant  hereto  shall  survive  the  Closing,   regardless  of  any
investigation  made by or on behalf of any party, until the first anniversary of
the Closing Date (the "Survival Date"). No action may be brought with respect to
a breach of any  representation  after the Survival  Date unless,  prior to such
time,  the party seeking to bring such an action has notified the other party of
such claim, specifying in reasonable detail the nature of the loss suffered. The
provisions of this Section 9.1 shall have no effect upon any of the covenants of
the  parties  set  forth in  Article V or any of the  other  obligations  of the
parties hereto under the Agreement,  whether to be performed  later, at or after
the Closing.


                                      -16-





         9.2  Indemnification by Company.  The Company shall indemnify,  defend,
and hold harmless Buyer from and against any and all claims,  actions, causes of
action, demands,  losses, damages,  liabilities,  costs, and expenses (including
reasonable  attorneys' fees and expenses)  (collectively,  "Damages"),  asserted
against,  resulting  to,  imposed  upon,  or  incurred  by  Buyer,  directly  or
indirectly,  by reason of or resulting  from any breach by the Company of any of
its  representations,  warranties,  covenants,  or agreements  contained in this
Agreement or in any  certificate,  instrument,  or document  delivered  pursuant
hereto. Notwithstanding anything to the contrary contained herein, the Company's
indemnity  obligations  hereunder (i) will not extend to Damages  arising out of
negligence,  willful  misconduct  or fraud of the Buyer and (ii) with respect to
indemnification  Damages under this Section 9.2 (other than, for each of (i) and
(ii),  Damages  related to the  ability of the Buyer to exercise  the  Warrants,
receive the Warrant Shares, or sell the Warrant Shares related to the failure of
Magellan  to effect the  registration  of the  Warrant  Shares),  the  Company's
indemnification  obligations  (x) for a period  of two (2) years  following  the
Closing,  shall not arise until the aggregate  Damages resulting from the breach
exceed  $1,000,000,  at which time such  indemnity  obligations  shall cover all
Damages,  and (y) after two (2) years  following  the  Closing,  shall not arise
until the aggregate  Damages during such period resulting from the breach exceed
$10,000,000, at which time such indemnity obligations shall cover all Damages.

         9.3  Indemnification by Buyer. Buyer shall indemnify,  defend, and hold
harmless  the Company  from and against  any and all Damages  asserted  against,
resulting to, imposed upon, or incurred by the Company,  directly or indirectly,
by  reason  of  or   resulting   from  any   breach  by  Buyer  of  any  of  its
representations,   warranties,   covenants,  or  agreements  contained  in  this
Agreement or in any  certificate,  instrument,  or document  delivered  pursuant
hereto.  Notwithstanding  anything to the  contrary  contained  herein,  Buyer's
indemnity  obligations  hereunder (i) will not extend to Damages  arising out of
negligence,  willful misconduct or fraud of the Company and (ii) with respect to
indemnification  Damages  under this Section  9.3,  the Buyer's  indemnification
obligations (x) for a period of two (2) years  following the Closing,  shall not
arise until the aggregate Damages  resulting from the breach exceed  $1,000,000,
at which time such indemnity  obligations shall cover all Damages, and (y) after
two (2) years following the Closing, shall not arise until the aggregate Damages
during such period resulting from the breach exceed  $10,000,000,  at which time
such indemnity obligations shall cover all Damages.

         9.4  Procedure  for  Indemnification.  Promptly  after  receipt  by  an
indemnified  party under Section 9.2 or 9.3 of notice of the commencement of any
action,  such  indemnified  party shall,  if a claim in respect thereof is to be
made against an  indemnifying  party under such Section,  give written notice to
the indemnifying party of the commencement thereof, but the failure so to notify
the indemnifying party shall not relieve it of any liability that it may have to
any indemnified party except to the extent the indemnifying  party  demonstrates
that the defense of such action is prejudiced  thereby.  In case any such action
shall be brought  against an indemnified  party and it shall give written notice
to the indemnifying  party of the commencement  thereof,  the indemnifying party
shall be entitled to participate therein and, to the extent that it may wish, to
assume  the  defense  thereof  with  counsel  reasonably  satisfactory  to  such
indemnified  party.  If the  indemnifying  party elects to assume the defense of
such action, the indemnified party shall have the right to employ separate

                                      -17-





counsel at its own expense and to  participate  in the defense  thereof.  If the
indemnifying party elects not to assume (or fails to assume) the defense of such
action,  the  indemnified  party shall be entitled to assume the defense of such
action with counsel of its own choice, at the expense of the indemnifying party.
If  the  action  is  asserted  against  both  the  indemnifying  party  and  the
indemnified  party  and  there is a  conflict  of  interests  which  renders  it
inappropriate for the same counsel to represent both the indemnifying  party and
the indemnified  party, the  indemnifying  party shall be responsible for paying
for separate counsel for the indemnified party; provided, however, that if there
is more  than  one  indemnified  party,  the  indemnifying  party  shall  not be
responsible for paying for more than one separate firm of attorneys to represent
the indemnified  parties,  regardless of the number of indemnified  parties. The
indemnifying  party shall have no liability  with respect to any  compromise  or
settlement of any action  effected  without its written consent (which shall not
be unreasonably withheld).


                                    ARTICLE X

                                  MISCELLANEOUS

         10.1 Notices. All notices, requests,  demands, and other communications
required or permitted to be given or made hereunder by any party hereto shall be
in  writing  and shall be deemed  to have been duly  given or made if  delivered
personally,  or transmitted by first class registered or certified mail, postage
prepaid,  return  receipt  requested,  or sent  by  prepaid  overnight  delivery
service, or sent by cable, telegram, or telefax, to the parties at the addresses
and telefax  numbers set forth opposite their names on the signature page hereof
(or at such other  addresses  and telefax  numbers as shall be  specified by the
parties by like notice).

         10.2 Entire  Agreement.  This Agreement,  together with the Transaction
Documents,  constitutes  the entire  agreement  between the parties  hereto with
respect to the subject  matter hereof and  supersedes  all prior  agreements and
understandings,  both written and oral,  between the parties with respect to the
subject matter hereof.

         10.3 Binding Effect; Assignment; No Third Party Benefit. This Agreement
shall be binding  upon and inure to the benefit of the parties  hereto and their
respective legal representatives,  successors,  and permitted assigns. Except as
otherwise  expressly provided in this Agreement,  neither this Agreement nor any
of the rights,  interests,  or obligations hereunder shall be assigned by any of
the parties  hereto  without  the prior  written  consent of the other  parties.
Except as provided in Article IX, nothing in this Agreement, express or implied,
is intended to or shall  confer upon any person  other than the parties  hereto,
and their respective legal representatives,  successors,  and permitted assigns,
any rights, benefits, or remedies of any nature whatsoever under or by reason of
this Agreement.

         10.4     Severability.  If any provision of this Agreement is held to
be unenforceable, this Agreement shall be considered divisible and such 
provision shall be deemed inoperative to the extent

                                      -18-





it is deemed  unenforceable,  and in all other  respects  this  Agreement  shall
remain in full force and effect;  provided  however,  that if any such provision
may be made  enforceable by limitation  thereof,  then such  provision  shall be
deemed to be so limited and shall be enforceable to the maximum extent permitted
by applicable law.

         10.5     Governing Law.  This Agreement shall be governed by and 
construed and enforced in accordance with the laws of the State of Delaware, 
without regard to the principles of conflicts of laws thereof.

         10.6 Counterparts. This Agreement may be executed by the parties hereto
in any number of  counterparts,  each of which shall be deemed an original,  but
all of which shall  constitute one and the same agreement.  Each counterpart may
consist of a number of copies  hereof each signed by less than all, but together
signed by all, the parties hereto.


                                   ARTICLE XI

                                   DEFINITIONS

         11.1  Certain Defined Terms.  As used in this Agreement, each of the 
following terms has the meaning given it in this Article:

                  "Affiliate" has the meaning specified in Rule 12b-2 
         promulgated under the Exchange Act.

                  "Applicable  Law" means any statute,  law, rule, or regulation
         or any judgment, order, writ, injunction, or decree of any Governmental
         Entity to which a specified person or property is subject.

                  "Business  Day" shall mean any day other  than a  Saturday,  a
         Sunday, or a day on which banking  institutions in Atlanta,  Georgia or
         Dallas,  Texas are authorized or obligated by law or executive order to
         close.

                  "Encumbrances"  means  liens,   charges,   pledges,   options,
         mortgages,  deeds of trust,  security interests,  claims,  restrictions
         (whether  on  voting,  sale,  transfer,   disposition,  or  otherwise),
         easements,  and  other  encumbrances  of every  type  and  description,
         whether imposed by law, agreement, understanding, or otherwise.

                  "Equity  Ownership  Interests" shall mean, with respect to the
         Buyer, at any time, the fraction (a) having as its numerator the number
         of  shares  of  Common  Stock  and   Underlying   Warrant  Shares  held
         beneficially  by  the  Buyer  at  such  time,  and  (b)  having  as its
         denominator the aggregate number of shares of Common Stock  (calculated
         on a fully diluted basis) issued and outstanding at such time.

                                      -19-





                  "Equity  Securities"  means any capital  stock of the Company,
         and  any  securities  directly  or  indirectly   convertible  into,  or
         exercisable or  exchangeable  for any capital stock of the Company,  or
         any right, option, warrant or other security which, with the payment of
         additional  consideration,  the expiration of time or the occurrence of
         any event  shall  give the  holder  thereof  the right to  acquire  any
         capital  stock  of the  company  or any  security  convertible  into or
         exercisable or exchangeable for, any capital stock of the Company.

                  "Exchange Act" means the Securities Exchange Act of 1934, as 
         amended.

                  "Exchange  Agreement"  means that certain  Exchange  Agreement
         among the Company and certain  other  parties  dated as of December 13,
         1995.

                  "Governmental  Entity"  means  any  court or  tribunal  in any
         jurisdiction  (domestic  or foreign) or any  public,  governmental,  or
         regulatory body,  agency,  department,  commission,  board,  bureau, or
         other authority or instrumentality (domestic or foreign).

                  "HSR Act" means the Hart-Scott-Rodino Antitrust Improvements 
         Act of 1976, as amended.

                  "Person" means any individual, corporation, partnership, joint
         venture,   association,   joint-stock   company,   trust,   enterprise,
         unincorporated organization, or Governmental Entity.

                  "Proceedings"   means   all   proceedings,   actions,   suits,
         investigations,   and   inquiries  by  or  before  any   arbitrator  or
         Governmental Entity.

                  "Registrable  Warrant Shares" means the Warrant Shares and any
         Common Stock or other Equity  Securities issued with respect thereto by
         way  of  stock  dividend  or  stock  split  or  in  connection  with  a
         combination of shares, recapitalization, merger, consolidation or other
         reorganization or otherwise.

                  "Rights Agreement" means that certain Rights Agreement,  dated
         as of July  21,1992,  as  amended  by the  First  Amendment  to  Rights
         Agreement, dated as of May 30, 1997 between the Company and First Union
         National Bank of North Carolina, as rights agent.

                  "Securities Act" means the Securities Act of 1933, as amended.

                  "Subsidiary"  means  any  corporation  more  than 50% of whose
         outstanding  voting  securities,  or  any  general  partnership,  joint
         venture,  or  similar  entity  more  than  50% of  whose  total  equity
         interests,  is owned,  directly or indirectly,  by the Company,  or any
         limited partnership of which the Company or any Subsidiary is a general
         partner.

                  "Underlying Warrant Shares" shall mean, at any time, all 
         shares of Common Stock which may be acquired upon exercise of the
         Warrants.  For purposes hereof, any person who

                                      -20-





         holds  Warrants  shall be  deemed to be the  holder  of the  Underlying
         Warrant Shares obtainable upon exercise of such Warrants.

         11.2 Certain Additional Defined Terms. In addition to such terms as are
defined in the opening  paragraph of and the recitals to this  Agreement  and in
Section 11.1,  the following  terms are used in this Agreement as defined in the
Sections set forth opposite such terms:

Defined Term                                                   Section Reference

Closing..............................................................Article II
Closing Date.........................................................Article II
Damages.....................................................................9.2
Excluded Transfer...........................................................5.5
Material Activity...........................................................5.3
Purchase Price..............................................................1.2
Registration Expenses.......................................................5.3
Registration Statement......................................................5.3
SEC Filings.................................................................3.7
Survival Date...............................................................9.1
Warrant Shares..............................................................3.6
Warrants....................................................................1.1


                                      -21-





         IN WITNESS WHEREOF, the parties have executed this Agreement, or caused
this Agreement to be executed by their duly authorized  representatives,  all as
of the day and year first above written.


                                         MAGELLAN HEALTH SERVICES, INC.
Address:
3414 Peachtree Road, N.E. Suite 1400
Atlanta, Georgia 30326                   By:\s\ Linton C. Newlin
Fax: (404) 814-5717                         ----------------------------------- 
                                             Linton C. Newlin
                                             Vice President and Secretary


                                         CRESCENT OPERATING, INC.


                                         By: \s\ Jeffrey L. Stevens
                                             ----------------------------------
                                               Jeffrey L. Stevens
                                              Chief Financial Officer, Treasurer
                                              and Secretary


                                      -22-




                                    EXHIBIT A
                               (Form of Warrants)


                                      -23-





THIS WARRANT AND ANY SHARES  ACQUIRED UPON THE EXERCISE OF THIS WARRANT HAVE NOT
BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933,  AS AMENDED,  OR ANY STATE
SECURITIES  LAWS  AND MAY  NOT BE  SOLD,  ASSIGNED,  TRANSFERRED,  OR  OTHERWISE
DISPOSED OF UNLESS  REGISTERED  PURSUANT TO THE PROVISIONS OF THAT ACT OR UNLESS
AN OPINION OF COUNSEL TO THE COMPANY OR OTHER COUNSEL,  REASONABLY  SATISFACTORY
TO THE COMPANY IS OBTAINED  STATING THAT SUCH  DISPOSITION IS IN COMPLIANCE WITH
AN AVAILABLE EXEMPTION FROM SUCH REGISTRATION.

THE RIGHT TO SELL OR  OTHERWISE  TRANSFER  THIS  WARRANT  IS  SUBJECT TO CERTAIN
RESTRICTIONS  SET FORTH IN A WARRANT  PURCHASE  AGREEMENT  DATED JUNE 17,  1997,
BETWEEN  THE  COMPANY AND THE  INITIAL  BUYER OF THE  WARRANTS,  A COPY OF WHICH
AGREEMENT IS ON FILE AT THE PRINCIPAL  OFFICES OF THE COMPANY.  THIS WARRANT MAY
NOT BE SOLD OR TRANSFERRED  EXCEPT UPON THE CONDITIONS  SPECIFIED IN THE WARRANT
PURCHASE AGREEMENT AND IN THIS WARRANT,  AND NO SALE OR TRANSFER OF THIS WARRANT
SHALL BE VALID OR  EFFECTIVE  UNLESS AND UNTIL SUCH  CONDITIONS  SHALL HAVE BEEN
COMPLIED WITH.

       ------------------------------------------------------------------


                            CRESCENT OPERATING, INC.

             (Incorporated under the laws of the State of Delaware)

                Void after 5:00 p.m., Dallas, Texas, local time,
                               on [June ___], 2001


No. ___                                                        Right to Purchase
                                                                [_______] Shares

                             STOCK PURCHASE WARRANT

         THIS CERTIFIES THAT, for value  received,  [Magellan  Health  Services,
Inc., a Delaware corporation] (the "Holder"), or registered assigns, is entitled
to  purchase  from  Crescent  Operating,   Inc.,  a  Delaware  corporation  (the
"Company"),  at any time or from time to time  during  the period  specified  in
Paragraph  2  hereof,   an  amount  as  calculated  below,  of  fully  paid  and
nonassessable  shares of the Company's  Common  Stock,  par value $.01 per share
(the "Common  Stock"),  at an exercise price as calculated  below (the "Exercise
Price").  The term  "Warrant  Shares",  as used herein,  refers to the shares of
Common  Stock  purchasable  hereunder.  The  number of Warrant  Shares  issuable
pursuant to this Warrant  shall be limited to the number of Warrant  Shares that
bears the same  relationship to [_______] Warrant Shares as the number of shares
of Common  Stock of the Holder  issued to the Company and  Crescent  Real Estate
Equities  Limited  Partnership,  a  Delaware  limited  partnership  ("Crescent")
pursuant to the Warrant Purchase Agreement dated June 17, 1997

                                      - 1 -





by and between the Company and the Holder,  and the Warrant  Purchase  Agreement
dated January 29, 1997, as subsequently amended, by and between Crescent and the
Holder,  respectively  (collectively,   the  "Holder  Purchase  Agreements")  in
connection with the respective  corresponding  numbered  warrants,  bears to the
number of shares of common  stock of the Holder  issuable  under  such  numbered
warrants.

         The Exercise Price shall be the highest price obtained by multiplying a
factor of 1.25 by the arithmetic mean, over the period of 30 consecutive days on
which  the  national   securities   exchange,   automated  quotation  system  or
over-the-counter  market on which the Common Stock is then  listed,  admitted to
trading or quoted (or if such Common  Stock is traded on more than one  national
securities exchange,  automated quotation system or over-the-counter market, the
national  securities  exchange,  automated  quotation system or over-the-counter
market as designated by the Company) is open for trading on a regular basis (any
such day is a "Trading  Day")  beginning the Trading Day  immediately  following
June 17,  1997,  on each such  Trading  Day,  of the high and low sale prices of
shares of Common Stock or if no such sale takes place on such date,  the average
of the highest closing bid and lowest closing asked prices thereof on such date,
in  each  case as  officially  reported  on the  national  securities  exchange,
automated quotation system or over-the-counter  market on which the Common Stock
is then  listed,  admitted  to  trading or quoted.  The  Warrant  Shares and the
Exercise Price are subject to adjustment as provided in Paragraph 4 hereof.

         This Warrant, together with all warrants issued upon transfer, exchange
or in  replacement  hereof  pursuant to  Paragraph 7 hereof  (collectively,  the
"Warrants"), is issued pursuant to, and is subject to all terms, provisions, and
conditions  contained in, that certain Warrant  Purchase  Agreement,  dated June
[17],  1997 (the  "Purchase  Agreement"),  by and  between  the  Company and the
Holder. This Warrant is subject to the following  additional terms,  provisions,
and conditions:

         1. Manner of Exercise;  Issuance of  Certificates;  Payment for Shares.
Subject to the provisions  hereof and the  provisions of the Purchase  Agreement
which  restrict the exercise of the  Warrants,  this Warrant may be exercised by
the  holder  hereof,  in whole or in part,  by the  surrender  of this  Warrant,
together with a completed Exercise Agreement in the form attached hereto, to the
Company  during  normal  business  hours on any  business  day at the  Company's
principal  office in Fort  Worth,  Texas (or such other  office or agency of the
Company as it may designate by notice to the holder hereof), during the Exercise
Period (as  defined in  Paragraph  2),  and upon  payment to the  Company of the
Exercise  Price for the Warrant  Shares  specified in said  Exercise  Agreement,
which such payment shall be made in cash or by certified or official bank check.
The Company shall not be required to issue  fractional  Warrant  Shares upon any
exercise of the Warrant, but instead shall pay to the holder of this Warrant the
cash  value of any  such  fractional  Warrant  Shares.  The  Warrant  Shares  so
purchased  shall be deemed to be issued to the holder  hereof or its designee as
the record owner of such shares as of the close of business on the date on which
this Warrant  shall have been  surrendered,  the  completed  Exercise  Agreement
delivered,  and payment made for such shares as aforesaid.  Certificates for the
Warrant  Shares  so  purchased,  representing  the  aggregate  number  of shares
specified in said  Exercise  Agreement,  shall be delivered to the holder hereof
within a reasonable  time, not exceeding ten business  days,  after this Warrant
shall have been so exercised.

                                      - 2 -





The  certificates  so  delivered  shall  be in  such  denominations  as  may  be
reasonably  requested by the holder  hereof,  shall,  unless the Warrant  Shares
evidenced  by  such  certificate  have  previously  been  registered  under  the
Securities Act of 1933, as amended (the  "Securities  Act"), be imprinted with a
restrictive legend substantially  similar to the legend appearing on the face of
this  Warrant,  and shall be registered in the name of said holder or such other
name as shall be  designated  by said holder.  If this  Warrant  shall have been
exercised  only in part,  then,  unless this  Warrant has  expired,  the Company
shall, at its expense, at the time of delivery of said certificates,  deliver to
said holder a new  Warrant  representing  the number of shares  with  respect to
which this Warrant  shall not then have been  exercised,  which Warrant shall be
imprinted  on its  face  with  the  same  legend  appearing  on the face of this
Warrant.  The Company shall pay all taxes and other expenses and charges payable
in  connection  with  the   preparation,   execution,   and  delivery  of  stock
certificates (and any new Warrants) pursuant to this Paragraph 1 except that, in
case such stock  certificates  shall be registered in a name or names other than
the holder of this Warrant,  funds  sufficient to pay all stock  transfer  taxes
which shall be payable in  connection  with the  execution  and delivery of such
stock certificates shall be paid by the holder hereof to the Company at the time
of the delivery of such stock certificates by the Company as mentioned above.

         2.  Period of  Exercise.  Subject  to the  provisions  of the  Purchase
Agreement  which  restrict  the  exercise  of  the  Warrants,  this  Warrant  is
exercisable at any time or from time to time during the period  commencing  when
either the Company or Crescent exercises its respective  corresponding  numbered
warrant under the respective Holder Purchase  Agreements and ending at 5:00 p.m.
Dallas, Texas, local time, on [ ] (the "Exercise Period").

         3. Certain  Actions  Prohibited.  The Company will not, by amendment of
certificate of incorporation or through any reorganization,  transfer of assets,
consolidation,  merger,  dissolution,  issue or sale of securities, or any other
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms to be observed or performed by it hereunder,  but will at all times in
good faith assist in the carrying out of all the  provisions of this Warrant and
in the taking of all such action as may reasonably be requested by the holder of
this  Warrant in order to protect the  exercise  privilege of the holder of this
Warrant  against  dilution or other  impairment,  consistent  with the tenor and
purpose of this Warrant.

         Without limiting the generality of the foregoing,

                  (i) the Company  will not increase the par value of the shares
of Common Stock  receivable upon the exercise of this Warrant above the Exercise
Price then in effect,

                  (ii) before  taking any action which would cause an adjustment
reducing  the  Exercise  Price  below the then par value of the shares of Common
Stock so receivable,  the Company will take all such corporate  action as may be
necessary or appropriate in order that the Company may validly and legally issue
fully paid and  nonassessable  shares of Common Stock at such adjusted  Exercise
Price upon the exercise of this Warrant, or


                                      - 3 -





                  (iii) the Company  will not take any action  which  results in
any  adjustment  of the  Exercise  Price if the total number of shares of Common
Stock  issuable  after the action upon the exercise of this Warrant would exceed
the total  number of shares of Common  Stock then  authorized  by the  Company's
charter and available for other than the purpose of issue upon such exercise.

         4.  Anti-dilution  Provisions.  The Exercise  Price shall be subject to
adjustment  from  time to time  as  provided  in this  Paragraph  4.  Upon  each
adjustment of the Exercise Price, the holder of this Warrant shall thereafter be
entitled to purchase, at the Exercise Price resulting from such adjustment,  the
largest number of Warrant Shares  obtained by multiplying  the Exercise Price in
effect  immediately  prior to such  adjustment  by the number of Warrant  Shares
purchasable  hereunder  immediately  prior to such  adjustment  and dividing the
product  thereof by the  Exercise  Price  resulting  from such  adjustment.  For
purposes of this Paragraph 4, the term "Capital Stock," as used herein, includes
the Common  Stock and any  additional  class of stock of the  Company  having no
preference  as to  dividends  or  distributions  on  liquidation  which  may  be
authorized in the future by an amendment to the Company's charter, provided that
the shares  purchasable  pursuant to this Warrant  shall  include only shares of
Common Stock,  or shares  resulting  from any  subdivision or combination of the
Common  Stock,  or  in  the  case  of  any   reorganization,   reclassification,
consolidation, merger, or sale of the character referred to in this Paragraph 4,
the stock or other securities or property provided for in this Paragraph 4.

         (a)  Subdivisions  and  Combinations.  In case at any time the  Company
shall (i)  subdivide  the  outstanding  shares of  Capital  Stock into a greater
number of shares, or (ii) combine the outstanding shares of Capital Stock into a
smaller number of shares, the Exercise Price in effect immediately prior thereto
shall be adjusted proportionately so that the adjusted Exercise Price shall bear
the same  relation to the  Exercise  Price in effect  immediately  prior to such
event as the total  number of shares of Capital  Stock  outstanding  immediately
prior to such event  shall bear to the total  number of shares of Capital  Stock
outstanding immediately after such event. Such adjustment shall become effective
immediately after the effective date of a subdivision or combination.

         (b) Stock  Dividends.  In case the  Company  at any time after the date
hereof shall declare,  order, pay or make any dividend or other  distribution to
all holders of the Capital  Stock  payable in Capital  Stock,  then in each such
case, subject to Paragraph 4(d) hereof, the Exercise Price in effect immediately
prior to the close of business on the record date fixed for the determination of
holders  of any  class of  securities  entitled  to  receive  such  dividend  or
distribution  shall be reduced to a price  (calculated  to the nearest .001 of a
cent) determined by multiplying such Exercise Price by a fraction

                  (i)  the numerator of which shall be the number of shares of 
Capital Stock outstanding immediately prior to such dividend or distribution, 
and

                  (ii) the denominator of which shall be the number of shares of
Capital Stock outstanding immediately after such dividend or distribution.


                                      - 4 -





         Such adjustment shall be made on the date such dividend is paid or such
distribution is made and shall become  effective  retroactive to the record date
for the  determination  of  shareholders  entitled to receive  such  dividend or
distribution.

         (c) Dividends  other than Stock  Dividends.  In case the Company at any
time after the date hereof  shall  declare,  order,  pay or make any dividend or
other  distribution  to all holders of the Capital Stock,  other than a dividend
payable in shares of Capital Stock (including, without limitation,  dividends or
distributions  payable in cash,  evidences of indebtedness,  rights,  options or
warrants to subscribe for or purchase any Capital Stock or other securities,  or
any other securities or other property), then, and in each such case, subject to
Paragraph  4(d) hereof,  the Exercise Price in effect  immediately  prior to the
close of business on the record date fixed for the  determination  of holders of
any class of securities  entitled to receive such dividend or distribution shall
be reduced to a price  (calculated to the nearest .001 of a cent)  determined by
multiplying such Exercise Price by a fraction

                  (i) the  numerator  of which shall be the  "Market  Price" (as
defined  below) in effect on such record date or, if any class of Capital  Stock
trades on an ex-dividend  basis, the trading date immediately  prior to the date
of  commencement  of  ex-dividend  trading,  less the value of such  dividend or
distribution  (as  determined  in good  faith by the Board of  Directors  of the
Company) applicable to one share of Capital Stock, and

                  (ii) the  denominator  of which shall be such Market  Price on
such  record  date of, if any class of Capital  Stock  trades on an  ex-dividend
basis,  the  trading  date  immediately  prior  to the date of  commencement  of
ex-dividend trading.

         Such adjustment shall be made on the date such dividend is paid or such
distribution is made and shall become  effective  retroactive to the record date
for the  determination  of  shareholders  entitled to receive  such  dividend or
distribution.

         For  the  purpose  hereof,  "Market  Price"  shall  mean,  on any  date
specified  herein,  (A) if any class of Capital  Stock is listed or  admitted to
trading on any  national  securities  exchange,  the highest  price  obtained by
taking the arithmetic  mean over a period of 20  consecutive  days on which such
national  securities  exchange  (or if such  stock is  traded  on more  than one
national securities exchange,  the exchange the Company has designated under the
Securities  Exchange  Act of 1934 to  receive  copies  of  reports  filed by the
Company  under such act) is open for trading on a regular basis (any such day is
a "Trading  Day") ending the Trading Day  immediately  prior to such date of the
average,  on each such Trading Day, of the high and low sale prices of shares of
each such  class of Capital  Stock or if no such sale takes  place on such date,
the average of the highest  closing bid and lowest  closing asked prices thereof
on such date,  in each case as  officially  reported on all national  securities
exchanges  on which each such class of Capital  Stock is then listed or admitted
to trading, or (B) if no shares of any class of Capital Stock are then listed or
admitted to trading on any national  securities  exchange,  the highest  closing
price  of  any  class  of   Capital   Stock  on  such  date   [traded]   in  the
over-the-counter  market[or quoted by and automated  quotation system] or, if no
such shares of

                                      - 5 -





any class of Capital  Stock are then quoted in any such system,  as published by
the National Quotation Bureau, Inc. or any similar successor  organization,  and
in either case as  reported  by any member  firm of the New York Stock  Exchange
selected  by the  Company.  If no shares of any class of Capital  Stock are then
listed or  admitted to trading on any  national  securities  exchange  and if no
closing  bid and asked  prices  thereof are then so quoted or  published  in the
over-the-counter  market,  "Market  Price" shall mean the higher of (x) the book
value per share of Capital Stock (assuming for the purposes of this  calculation
the  economic  equivalence  of all  shares  of all  class of  Capital  Stock) as
determined  on a fully  diluted  basis in  accordance  with  generally  accepted
accounting  principles  by the Board of  Directors of the Company as of the last
day of any  month  ending  within  60 days  preceding  the date as of which  the
determination  is to be made or (y) the  fair  value  per  share of  classes  of
Capital  Stock  (assuming  for the  purposes of this  calculation  the  economic
equivalence of all shares of all classes of Capital  Stock),  as determined on a
fully diluted  basis in good faith by the Board of Directors of the Company,  as
of a date which is 15 days preceding the date as of which the  determination  is
to be made.

         (d)  Minimum  Adjustment  of  Exercise  Price.  If  the  amount  of any
adjustment of the Exercise Price required  pursuant to this Paragraph 4 would be
less  than one  percent  (1%) of the  Exercise  Price in effect at the time such
adjustment  is  otherwise  so required to be made,  such amount shall be carried
forward and  adjustment  with  respect  thereto made at the time of and together
with any subsequent  adjustment  which,  together with such amount and any other
amount or amounts so carried forward,  shall aggregate at least one percent (1%)
of such Exercise Price;  provided that,  upon the exercise of this Warrant,  all
adjustments  carried  forward and not  theretofore  made up to and including the
date of such  exercise  shall,  with respect to the portion of this Warrant then
exercised, be made to the nearest .001 of a cent.

         (e) Fundamental Change Transaction.  In case at any time after the date
hereof a  purchase,  tender,  or  exchange  offer  shall  have  been made to and
accepted  by the holders of more than 50% of the  outstanding  shares of Capital
Stock,  or the  Company  is  otherwise  a party to any  transaction  (including,
without limitation,  a merger,  consolidation,  sale of all or substantially all
the Company's assets,  liquidation,  or  recapitalization  of the Capital Stock)
which is to be  effected in such a way that as a result of such  transaction  or
offer (x) the holders of Common  Stock (or any other  securities  of the Company
then issuable  upon the exercise of this  Warrant)  shall be entitled to receive
stock or other  securities  or property  (including  cash) with respect to or in
exchange for Common Stock (or such other  securities),  or (y) the Capital Stock
ceases to be a publicly  traded  security  either  listed on the American  Stock
Exchange or the New York Stock Exchange,  traded in the over-the-counter market,
or  quoted  on an  automated  quotation  system,  or any  successor  thereto  or
comparable  system (each such  transaction  being herein  called a  "Fundamental
Change   Transaction"),   then,  as  a  condition  of  such  Fundamental  Change
Transaction,  lawful and adequate  provision shall be made whereby the holder of
this Warrant  shall  thereafter  have the right to purchase and receive upon the
basis and upon the terms and conditions  specified in this Warrant,  and in lieu
of the shares of Common Stock (or such other securities) purchasable immediately
before such transaction upon the exercise hereof, such stock or other securities
or property (including cash) as may be issuable or payable with respect to or in
exchange for a number of outstanding shares of

                                      - 6 -





Common Stock (or such other  securities) equal to the number of shares of Common
Stock (or such other securities) purchasable immediately before such transaction
upon the exercise  hereof,  had such  Fundamental  Change  Transaction not taken
place. In any such case appropriate  provision shall be made with respect to the
rights  and  interests  of the  holder  of  this  Warrant  to the end  that  the
provisions hereof (including, without limitation, the provisions for adjustments
of the  Exercise  Price and of the number of  Warrant  Shares  purchasable  upon
exercise hereof) shall thereafter be applicable, as nearly as reasonably may be,
in relation to the stock or other securities or property thereafter  deliverable
upon the exercise  hereof  (including  an immediate  adjustment  of the Exercise
Price if by reason of or in connection with such Fundamental  Change Transaction
any securities  are issued or event occurs which would,  under the terms hereof,
require an adjustment of the Exercise Price). In the event of a consolidation or
merger of the Company with or into another  corporation or entity as a result of
which a greater  or lesser  number  of shares of common  stock of the  surviving
corporation or entity are issuable to holders of Capital Stock in respect of the
number  of  shares  of  Capital  Stock  outstanding  immediately  prior  to such
consolidation or merger,  then the Exercise Price in effect immediately prior to
such  consolidation  or merger  shall be  adjusted  in the same manner as though
there were a subdivision  or combination  of the  outstanding  shares of Capital
Stock.  The Company  shall not effect any such  Fundamental  Change  Transaction
unless prior to or  simultaneously  with the consummation  thereof the successor
corporation  or  entity  (if  other  than  the  Company)   resulting  from  such
consolidation or merger or the corporation or entity  purchasing such assets and
any other  corporation  or entity  the  shares of stock or other  securities  or
property of which are  receivable  thereupon by the holder of this Warrant shall
expressly assume, by written instrument executed and delivered (and satisfactory
in form) to the holder of this  Warrant,  (I) the  obligation to deliver to such
holder such stock or other  securities  or property as, in  accordance  with the
foregoing provisions, such holder may be entitled to purchase and (ii) all other
obligations of the Company hereunder.

         (f) Notice of Adjustment. Upon the occurrence of any event requiring an
adjustment of the Exercise  Price,  then and in each such case the Company shall
promptly  deliver to the holder of this  Warrant a notice  stating the  Exercise
Price  resulting from such  adjustment and the increase or decrease,  if any, in
the number of shares of Common Stock  issuable  upon  exercise of this  Warrant,
setting forth in reasonable  detail the method of calculation and the facts upon
which such calculation is based.  Within 90 days after each fiscal year in which
any such  adjustment  shall have  occurred,  or within 30 days after any request
therefor by the holder of this  Warrant  stating  that such holder  contemplates
exercise of this Warrant, the Company will deliver to the holder of this Warrant
a certificate of the Company's chief financial officer confirming the statements
in the most recent notice delivered under this Paragraph 4(f).

         (g)      Other Notices.  In case at any time:

                  (i)    the Company shall declare or pay to all the holders of
Capital Stock any dividend (whether payable in Capital Stock, cash, securities 
or other property);


                                      - 7 -





                  (ii)     the Company shall offer for subscription pro rata to 
all the holders of Capital Stock any additional shares of stock of any class or
other rights;

                  (iii)   there  shall  be  any   capital   reorganization,   or
reclassification of the Capital Stock of the Company, or consolidation or merger
of the Company with, or sale of all or substantially  all its assets to, another
corporation or other entity;

                  (iv)    there shall be a voluntary or involuntary dissolution,
liquidation, or winding-up of the Company; or

                  (v)     there shall be any other Fundamental Change 
Transaction;

then, in any one or more of such cases,  the Company shall give to the holder of
this  Warrant  (a) at least five (5)  Business  Days  prior to the  record  date
established  or  related  to any event  referred  to in  clause  (I) - (v) above
(which,  for purposes of events referred to in clauses (I) - (v) above, shall be
the date on which  the books of the  Company  shall  close or a record  shall be
taken for such dividend, distribution, or subscription rights or for determining
rights  to  vote  in  respect  of  any  such  reorganization,  reclassification,
consolidation,   merger,  sale,   dissolution,   liquidation,   winding-up,   or
Transaction)  written notice of such record date and (b) in the case of any such
reorganization,  reclassification,  consolidation,  merger,  sale,  dissolution,
liquidation,  winding-up,  or Transaction known to the Company, at least 30 days
prior  written  notice  of  the  date  (or,  if not  then  known,  a  reasonable
approximation  thereof by the  Company)  when the same shall  take  place.  Such
notice in accordance  with the foregoing  clause (a) shall also specify,  in the
case of any such dividend,  distribution,  or subscription  rights,  the date on
which such holders of Capital Stock shall be entitled  thereto,  and such notice
in accordance with the foregoing clause (b) shall also specify the date on which
such holders of Capital Stock shall be entitled to exchange  their Capital Stock
for  securities  or  other  property   deliverable  upon  such   reorganization,
reclassification,   consolidation,   merger,  sale,  dissolution,   liquidation,
winding-up,  or  Transaction,  as the case may be. Such notice  shall also state
that the action in question  or the record date is subject to the  effectiveness
of a registration  statement under the Securities Act, or to a favorable vote of
security holders, if either is required.

         (h) Certain Events.  If any event occurs as to which, in the good faith
judgment of the Board of Directors of the Company,  the other provisions of this
Paragraph 4 are not  strictly  applicable  or if strictly  applicable  would not
fairly  protect the exercise  rights of the holder of this Warrant in accordance
with the essential intent and principles of such  provisions,  then the Board of
Directors  of the  Company  shall  make  such  adjustment,  if  any,  on a basis
consistent  with such essential  intent and  principles,  necessary to preserve,
without dilution,  the rights of the holder of this Warrant;  provided,  that no
such  adjustment  shall  have the effect of  increasing  the  Exercise  Price as
otherwise determined pursuant to this Paragraph 4.

         5. Issue Tax.  The  issuance of  certificates  for Warrant  Shares upon
the exercise  of this  Warrant  shall be made  without  charge to the holder of
this Warrant or such shares for any issuance tax in respect  thereof,  provided
that the Company shall not be required to pay any tax which may

                                      - 8 -





be payable in respect of any  transfer  involved in the issuance and delivery of
any warrant or certificate in a name other than the holder of this Warrant.

         6. No Rights or Liabilities  as a  Shareholder.  This Warrant shall not
entitle the holder  hereof to any voting rights or other rights as a shareholder
of the  Company.  No provision of this  Warrant,  in the absence of  affirmative
action by the holder hereof to purchase Warrant Shares,  and no mere enumeration
herein of the rights or privileges of the holder hereof,  shall give rise to any
liability  of such  holder for the  Exercise  Price or as a  shareholder  of the
Company,  whether  such  liability is asserted by the Company or by creditors of
the Company.

         7.       Transfer, Exchange, and Replacement of Warrant; Registration 
Rights.

         (a)  Restrictions  on Transfer of Warrants.  This Warrant  shall not be
transferable to any person or entity other than a wholly-owned  affiliate of the
Holder or as  permitted  under the  Purchase  Agreement.  The  transfer  of this
Warrant to a  wholly-owned  affiliate or other  transferee  permitted  under the
Purchase Agreement and all rights hereunder, in whole or in part, is registrable
at the office or agency of the Company  referred to in Paragraph  7(e) hereof by
the holder hereof in person or by his duly authorized  attorney,  upon surrender
of this  Warrant  properly  endorsed.  Upon any  transfer of this Warrant to any
wholly-owned affiliate or other permitted transferee,  other than a wholly-owned
affiliate or other  permitted  transferee  who is at that time a holder of other
Warrants,  the  Company  shall  have the right to  require  the  holder  and the
affiliate or other  transferee to make customary  representations  to the extent
reasonably necessary to assure that the transfer will comply with the Securities
Act and any applicable state  securities  laws. Each holder of this Warrant,  by
taking or holding the same, consents and agrees that this Warrant, then endorsed
in blank,  shall be deemed  negotiable,  and that the holder  hereof,  when this
Warrant shall have been so endorsed, may be treated by the Company and all other
persons  dealing with this Warrant as the absolute  owner and holder  hereof for
any purpose and as the person  entitled to exercise  the rights  represented  by
this  Warrant and to the  registration  of  transfer  hereof on the books of the
Company;  but until due presentment  for  registration of transfer on such books
the  Company  may treat the  registered  holder  hereof as the owner and  holder
hereof for all purposes,  and the Company shall not be affected by any notice to
the contrary.

         (b) Warrant Exchangeable for Different  Denominations.  This Warrant is
exchangeable,  upon the  surrender  hereof by the holder hereof at the office or
agency of the Company referred to in Paragraph 7(e) hereof,  for new Warrants of
like tenor  representing  in the  aggregate  the right to purchase the number of
shares  of  Common  Stock  which may be  purchased  hereunder,  each of such new
Warrants  to be  imprinted  with the same legend  appearing  on the face of this
Warrant and to represent the right to purchase such number of shares as shall be
designated  by said holder  hereof at the time of such  surrender.  For purposes
hereof,  the  term  "Warrant"  shall  be  deemed  to  include  any and all  such
replacement  Warrants,  whether issued pursuant to this  subparagraph (b) or any
other Paragraph hereof.


                                      - 9 -





         (c)  Replacement  of  Warrant.  Upon  receipt  of  evidence  reasonably
satisfactory to the Company of the loss,  theft,  destruction,  or mutilation of
this  Warrant and, in the case of any such loss,  theft,  or  destruction,  upon
delivery of an indemnity agreement reasonably satisfactory in form and amount to
the  Company,  or,  in the  case of any  such  mutilation,  upon  surrender  and
cancellation  of this  Warrant,  the Company,  at its expense,  will execute and
deliver, in lieu thereof, a new Warrant of like tenor.

         (d)  Cancellation;  Payment of  Expenses.  Upon the  surrender  of this
Warrant in connection with any transfer, exchange, or replacement as provided in
this  Paragraph 7, this Warrant shall be promptly  canceled by the Company.  The
Company shall pay all taxes (other than securities transfer taxes) and all other
expenses and charges payable in connection with the preparation,  execution, and
delivery of Warrants pursuant to this Paragraph 7.

         (e) Register.  The Company shall maintain,  at its principal  office in
Fort  Worth,  Texas (or such  other  office or agency of the  Company  as it may
designate by notice to the holder hereof), a register for this Warrant, in which
the Company  shall  record the name and address of the person in whose name this
Warrant has been issued,  as well as the name and address of each transferee and
each prior owner of this Warrant.

         (f)  Registration Rights.  The issuance of any Warrant Shares required
to be reserved for purposes of exercise of this Warrant and the resale of such 
Warrant Shares are entitled to the benefits of the registration rights set forth
in the Purchase Agreement.

         8. Notices. All notices, requests, and other communications required or
permitted to be given or delivered hereunder to the holder of this Warrant shall
be in writing, and shall be personally delivered,  or shall be sent by certified
or registered mail, postage prepaid and addressed, to such holder at the address
shown for such holder on the books of the Company,  or at such other  address as
shall  have been  furnished  to the  Company  by notice  from such  holder.  All
notices, requests, and other communications required or permitted to be given or
delivered hereunder to the Company shall be in writing,  and shall be personally
delivered, or shall be sent by certified or registered mail, postage prepaid and
addressed,  to the office of the Company at 777 Main Street,  Fort Worth,  Texas
76102,  Attention:  Chief Financial  Officer,  or at such other address as shall
have been  furnished  to the holder of this  Warrant by notice from the Company.
Any such  notice,  request,  or other  communication  may be sent by telegram or
telex, but shall in such case be subsequently  confirmed by a writing personally
delivered  or sent by  certified  or  registered  mail as  provided  above.  All
notices,  requests,  and other communications shall be deemed to have been given
either at the time of the delivery thereof to (or the receipt by, in the case of
a telegram or telex) the person  entitled to receive  such notice at the address
of such  person  for  purposes  of this  Paragraph  8,  or,  if  mailed,  at the
completion of the third full day  following the time of such mailing  thereof to
such address, as the case may be.


                                     - 10 -





          9.  GOVERNING  LAW.  THIS WARRANT  SHALL BE GOVERNED BY AND  CONSTRUED
AND ENFORCED IN ACCORDANCE  WITH THE LAWS OF DELAWARE,  WITHOUT REGARD TO ANY 
CHOICE OF LAW PRINCIPLES OF SUCH STATE.

         10.  Remedies.  The Company  stipulates that the remedies at law of the
holder of this Warrant in the event of any default or threatened  default by the
Company  in the  performance  of or  compliance  with  any of the  terms of this
Warrant  are  not  and  will  not  be  adequate,  and  that  such  terms  may be
specifically  enforced by a decree for the specific enforcement of any agreement
contained  herein or by an  injunction  against a violation  of any of the terms
hereof or otherwise.

         11.  Miscellaneous.

         (a)  Amendments.  This  Warrant  and any  provision  hereof  may not be
changed, waived,  discharged, or terminated orally, but only by an instrument in
writing  signed by the party (or any  predecessor in interest  thereof)  against
which enforcement of the same is sought.

         (b)  Descriptive Headings.  The descriptive headings of the several
paragraphs of this Warrant are inserted for purposes of reference only, and 
shall not affect the meaning or construction of any of the provisions hereof.

         (c) Successors and Assigns.  This Warrant shall, to the extent provided
in Section 4(e), be binding upon any entity succeeding to the Company by merger,
consolidation, or acquisition of all or substantially all the Company's assets.



                                     - 11 -





         IN WITNESS WHEREOF, the Company has caused this Warrant to be signed by
its duly  authorized  officer  under its  corporate  seal,  attested by its duly
authorized officer, on this __ day of June __, 1997.

                                    CRESCENT OPERATING, INC.



                                    By:__________________________
                                       Name: Gerald W. Haddock
                                       Title: President and Chief 
                                              Executive Officer


[CORPORATE SEAL]



Attest:



_____________________________
Jeffrey L. Stevens, Secretary








                           FORM OF EXERCISE AGREEMENT


                                                     Dated: _____________, ____.

To:      ____________________
         ____________________
         ____________________
         Attention:  ________

         The  undersigned,  pursuant to the  provisions  set forth in the within
Warrant,  hereby agrees to purchase _____ shares of Common Stock covered by such
Warrant,  and makes  payment  herewith  in full  therefor at the price per share
provided by such Warrant [in cash or by certified or official  bank check in the
amount of  $______________]  held by the  undersigned  and any applicable  taxes
payable by  undersigned.  Please issue a certificate  or  certificates  for such
shares of Common Stock in the name of and pay any cash for any fractional  share
to:


                       Name:___________________________________________________



                       Signature:______________________________________________
                       Title of Signing Officer or Agent (if any):_____________

                       Note:    The  above   signature should correspond
                                exactly  with the name on the face of the
                                within Warrant or with the name of the
                                assignee  appearing in the assignment form.

and,  if said  number  of shares of  Common  Stock  shall not be all the  shares
purchasable under the within Warrant,  a new Warrant is to be issued in the name
of said undersigned  covering the balance of the shares  purchasable  thereunder
less any fraction of a share paid in cash.








                               FORM OF ASSIGNMENT

         FOR  VALUE  RECEIVED,   the  undersigned  hereby  sells,  assigns,  and
transfers  all the  rights  represented  by and under the within  Warrant,  with
respect  to the  number  of shares of Common  Stock  covered  thereby  set forth
hereinbelow, to:


Name of Assignee                 Address                           No. of Shares
- ----------------                 -------                           -------------






, and hereby  irrevocably  constitutes and appoints  _______________________  as
agent  and  attorney-in-fact  to  transfer  said  Warrant  on the  books  of the
within-named corporation, with full power of substitution in the premises.


Dated: ______________, ____.

In the presence of


- -----------------------------------


                                 Name:_________________________________________


                                 Signature:____________________________________
                                 Title of Signing Officer or Agent
                                 (if any):_____________________________________
                                 Address: _____________________________________


                                 Note:     The above signature should correspond
                                           exactly with the name on the face of
                                           the within Warrant.