SUBORDINATION AGREEMENT



         THIS SUBORDINATION  AGREEMENT (this "Agreement") is made as of the ____
day of  ___________,  1997,  among CHARTER  BEHAVIORAL  HEALTH  SYSTEMS,  LLC, a
Delaware limited liability  company ("OpCo"),  CRESCENT REAL ESTATE EQUITIES LIM
ITED  PARTNERSHIP,  a Delaware limited  partnership  ("Crescent"),  and MAGELLAN
HEALTH SERVICES, INC., a Delaware corporation ("Magellan").



                                    RECITALS:


         A.  Crescent,  as landlord,  and OpCo and each of certain  wholly-owned
subsidiaries of OpCo  (collectively,  the "Initial OpCo Subs"),  collectively as
tenant, are parties to that certain Master Lease Agreement of even date herewith
(as the same may be amended or modified, the "Lease").


         B.  Magellan,  as franchisor,  and OpCo, as franchisee,  are parties to
that certain Master Franchise  Agreement of even date herewith,  and each of the
Initial OpCo Subs, as a franchisee,  and Magellan, as franchisor,  is a party to
an individual franchise agreement as described in the Master Franchise Agreement
(the  Master  Franchise  Agreement  and such  individual  franchise  agreements,
together with any new franchise agreements now or hereafter entered into between
Magellan, as franchisor, and OpCo, any Initial OpCo Sub, or any other subsidiary
of OpCo now or  hereafter  in  existence,  as such Master  Franchise  Agreement,
individual  franchise agreements or other franchise agreements may be amended or
modified, are referred to herein collectively as the "Franchise Agreement").


         C. OpCo and  Magellan  desire to  subordinate,  to the extent set forth
herein,  the payment and  performance of the Franchise  Agreement to the payment
and  performance  of  certain  obliga  tions  under the Lease upon the terms and
conditions  set forth  below,  and  Magellan  and  Crescent  desire to establish
certain duties, rights and responsibilities among themselves with respect to the
obligations of the OpCo, the Initial OpCo Subs, and any other subsidiary of OpCo
now or  hereafter  in  existence  that enters into a  franchise  agreement  with
Magellan  (the  Initial  OpCo Subs and such  other  subsidiaries  of OpCo  being
hereinafter referred to collectively as the "OpCo Subs").


         NOW,  THEREFORE,  in  consideration of the foregoing and other valuable
consideration hereby acknowledged, and in order to induce Crescent to enter into
the Lease with OpCo, OpCo, Crescent and Magellan agree as follows:

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                                    ARTICLE 1

                                   DEFINITIONS


1.1      "Additional  Charges"  shall  have the  meaning  given such term in the
         Lease payable with respect to the Term.


1.2      "Additional  Rent" shall have the meaning  given such term in the Lease
         payable with respect to the Term.


1.3      "Business Day" shall mean any day other than Saturday,  Sunday,  or any
         other  day on  which  banking  institutions  in the  states  of  Texas,
         Georgia,  and the State are  authorized  by law or executive  action to
         close.


1.4      "Collective Leased Properties" shall have the meaning given such term 
         in the Lease.

1.5      "Debtor   Relief   Laws"   shall  mean  any   applicable   liquidation,
         conservatorship,  bank ruptcy, moratorium,  rearrangement,  insolvency,
         reorganization  or similar  laws  relating  to the  relief of  debtors,
         readjustment of  indebtedness or composition,  and affecting the rights
         of creditors generally, which may from time to time be in effect.


1.6      "Franchise Agreement" shall have the meaning given such term in the 
         Recitals to this Agreement.


1.7      "Franchise Fees" shall mean,  collectively,  the franchise fees payable
         to Magellan under the Franchise Agreement,  including interest and late
         charges,  as well as any fees  payable to  Magellan by OpCo or any OpCo
         Sub with respect to Joint Ventures  and/or Managed  Businesses (as such
         terms are  defined  in the  Master  Franchise  Agreement)  pursuant  to
         Section 10 of the Master Franchise  Agreement to the extent not already
         included  in the  calculation  of  "Franchise  Fees" as  defined in the
         Master Franchise Agreement.


1.8      "Lease" shall have the meaning given such term in the Recitals to this
         Agreement.


1.9      "Lease Year" shall have the meaning given such term in the Lease.


1.10     "Leased Property" shall have the meaning given such term in the Lease.


1.11     "Minimum  Rent"  shall  have the  meaning  given such term in the Lease
         payable with respect to the Term.

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1.12     "Non-Priority Additional Rent" shall mean the amount of additional rent
         with  respect  to any Lease Year in excess of the  Priority  Additional
         Rent Base Amount.


1.13     "Non-Priority  Additional  Rent Monthly  Amount"  shall mean,  for each
         month in a Lease  Year,  the monthly  installment  of  Additional  Rent
         payable for such month equal to one-twelfth  (1/12th) of the difference
         between (a) the total Additional Rent payable for such Lease Year minus
         (b) the  Priority  Additional  Rent Base  Amount  for such  Lease  Year
         calculated  for such  month as  provided  below  in the  definition  of
         "Priority Addi tional Rent Base Amount."


1.14     "Permitted Payments" shall have the meaning given such term in Section
         2.2.


1.15     "Plan" shall have the meaning given such term in Section 2.4(c).


1.16     "Priority Additional Rent Base Amount" for any Lease Year shall mean an
         amount of Additional Rent equal to Ten Million  Dollars  ($10,000,000);
         provided,  however, that if Crescent,  as landlord,  funds, or makes an
         irrevocable commitment to fund, Capital Expenditures (as defined in the
         Lease) for any Lease Year in an amount in excess of Ten Million Dollars
         ($10,000,000) at OpCo's request, then the Priority Additional Rent Base
         Amount for such Lease Year shall be  increased to the amount of Capital
         Expenditures  funded or  committed  to be funded by  Crescent  for such
         Lease Year.  Notwithstanding the foregoing,  in the event that, and for
         so long as,  the  accrued  and  unpaid  Franchise  Fees equal or exceed
         Fifteen Million  Dollars  ($15,000,000),  then the Priority  Additional
         Rent Base  Amount  for any such  Lease  Year shall be reduced to $0.00;
         provided,  however,  that if Crescent  funds,  or makes an  irrevocable
         commitment  to fund,  Capital  Expenditures  for any Lease  Year in any
         amount at OpCo's request, then the Priority Additional Rent Base Amount
         for such  Lease  Year  shall be  increased  from $0.00 to the amount of
         Capital  Expenditures  funded or committed to be funded by Crescent for
         such Lease Year.  The  Priority  Additional  Rent Base Amount  shall be
         computed  monthly in advance of the payment of Rent required to be made
         under the Lease for the next succeeding  month.  Such calculation shall
         be made on the 25th day of the month,  unless the 25th day of the month
         is not a Business Day, in which event such  calculation  for such month
         shall be made on the  first  Business  Day  following  such  25th  day.
         Notwithstanding  anything  set  forth  above  to the  contrary,  if any
         request by OpCo to Crescent  to fund  Capital  Expendi  tures under the
         Lease is for an amount in excess of the  amount  budgeted  therefor  in
         OpCo's  approved   Annual  Budget  (as  defined  in  OpCo's   Operating
         Agreement),  then the Priority Additional Rent Base Amount shall not be
         increased  as  provided  above to the  extent  that the  amount of such
         request is above the budgeted amount unless such request

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         is accompanied by OpCo's  certification that Magellan has approved such
         requested amount.  Magellan acknowledges and agrees that Crescent shall
         be entitled to rely upon OpCo's certification that any amount requested
         either (i) is within  the  approved  Annual  Budget of OpCo or (ii) has
         been approved by Magellan,  and in the latter event such  certification
         by OpCo shall be accompanied by Magellan's  written  consent to such re
         quested amount.


1.17     "Rent"  shall mean,  collectively,  all Minimum  Rent,  including  late
         charges and default  rate  interest,  and  Additional  Rent,  but shall
         exclude Additional Charges except to the extent that Additional Charges
         include late charges and default rate interest.


1.18     "Rescission Event" shall have the meaning given such term in Section 
         3.4.


1.19     "Returned Payment" shall have the meaning given such term in Section 
         3.4.


1.20     "State" shall mean, as to each Leased Property, the state in which such
         Leased Property is located.


1.21     "Term" shall have the meaning given such term in the Lease.


                                    ARTICLE 2


                                  SUBORDINATION

2.1      Agreement  to  Subordinate.   Notwithstanding   any  provision  in  the
         Franchise Agreement or any other agreement between Magellan and OpCo or
         between  Magellan and any OpCo Sub to the contrary,  the Franchise Fees
         (including  any  increases  thereto  effected  from  time  to  time  by
         amendments to the Franchise  Agreement adding new Leased  Properties to
         the facilities  covered thereby) are and shall be, to the extent and in
         the manner  hereinafter set forth,  subject,  subordinate and junior in
         right of payment and  liquidation to the prior  irrevocable  payment in
         full of the Rent (other than Non-Priority Additional Rent), as the Rent
         (other than Non-Priority Additional Rent) may be increased from time to
         time by amendments to the Lease adding new Leased  Properties  that are
         also  covered  by the  Franchise  Agreement  to the  Collective  Leased
         Properties.  Magellan  acknowledges receipt of a true and complete copy
         of the  Lease.  Unless  and until  all Rent  (other  than  Non-Priority
         Additional  Rent)  shall  have been  fully paid and the Term shall have
         expired,  Magellan  will not,  except as otherwise  expressly  provided
         herein,  take or receive,  or retain,  from OpCo,  any OpCo Sub, or any
         other person or entity, by setoff or in any other

                                       -4-










         manner, payment of all or any part of the Franchise Fees, or accept any
         security  therefor,  and neither OpCo nor any OpCo Sub shall make, give
         or permit, directly or indirectly, any such payment, and Magellan shall
         not  demand or sue for any such  payment to the  extent  prohibited  in
         Section 2.3.  Notwithstanding the foregoing payment subordination,  but
         subject to the  provisions  of Sections 2.3 and 2.4,  OpCo may pay, and
         Magellan may receive,  the  Permitted  Payments,  as defined in Section
         2.2.


2.2      Permitted  Payments.  Notwithstanding  any provision  contained in this
         Agreement to the  contrary,  so long no "Default" or "Event of Default"
         (as  defined  therein)  under or within  the  meaning  of the Lease has
         occurred and is  continuing  with respect to the payment of Rent (other
         than  Non-Priority  Additional Rent), or would be created by making the
         payments to Magellan hereinafter described, and so long as none of OpCo
         or any OpCo Sub is the  subject  of any  proceeding  under  any  Debtor
         Relief  Laws,  OpCo may pay to  Magellan,  and Magellan may accept from
         OpCo,  the regularly  scheduled  monthly  install ment of the Franchise
         Fees in any month,  when due, as well as any accrued and unpaid monthly
         installments  of  the  Franchise  Fees  (collectively,  the  "Permitted
         Payments"),  after  payment  by OpCo of all Rent  due for  such  month,
         excluding  the  Non-Priority  Additional  Rent Monthly  Amount for such
         month.  Further,  notwithstanding  any  provi  sion  contained  in this
         Agreement to the  contrary,  except in the case of a Rescission  Event,
         Crescent  shall not be entitled to recover from  Magellan any Permitted
         Payment or any portion  thereof that has been properly made to Magellan
         in accordance with the terms of this Section 2.2.


2.3      Agreement Not to Enforce Payment or Commence Action.


    (a)  Notwithstanding  any  provision  contained  in  this  Agreement,   the
         Franchise  Agreement or any other agreement to the contrary,  prior to
         the payment in full of all Rent (other  than  Non-Priority  Additional
         Rent)  payable  under the Lease and the  expiration  of the Term,  (i)
         Magellan shall not object to, challenge,  hinder or delay the exercise
         by Crescent  of any right or remedy it may have under or with  respect
         to the Lease or any other agreement, or otherwise at law or in equity,
         against  OpCo,  any  OpCo  Sub  or  any of  its  or  their  assets  or
         properties,  and  (ii)  Magellan  shall  have  no  right  to  file  an
         involuntary  proceeding  against OpCo or any OpCo Sub under any Debtor
         Relief Laws or  otherwise to enforce  payment of any of the  Permitted
         Payments or any other  portion of the  Franchise  Fees against OpCo or
         any OpCo Sub, or to otherwise take any action against OpCo or any OpCo
         Sub (including, without limitation, any proceeding under Debtor Relief
         Laws),  or against any  property or assets of OpCo or any OpCo Sub, in
         order to collect the  Permitted  Payments or any other  portion of the
         Franchise Fees, without the prior written consent of Crescent,
                                       -5-










         if such action  could  reasonably  be expected to lead to OpCo's or any
         OpCo Sub's filing of a voluntary proceeding, or other creditors of OpCo
         or any OpCo Sub filing an  involuntary  proceeding  against OpCo or any
         OpCo  Sub,  under  any  Debtor  Relief  Laws.  However,  so  long as no
         "Default"  or "Event of Default"  under the Lease has  occurred  and is
         continuing with respect to the payment of Rent (other than Non-Priority
         Additional  Rent),  and so long as none of OpCo or any  OpCo Sub is the
         subject of any  proceeding  under any Debtor Relief Laws,  Magellan may
         pursue any default remedy  available  under the Fran chise Agreement or
         at law or in equity or  otherwise,  except  as  provided  above in this
         Section 2.3.


(b)      Each of Crescent and Magellan covenants to the other that it shall use
         commercially  reasonable  best efforts to provide in a timely  fashion
         written notice of the commencement and progress of any remedial action
         undertaken  against OpCo or any OpCo Sub, includ ing providing to such
         party  copies  of any and all  correspondence  to OpCo or any OpCo Sub
         from such party with respect to any of such party's rights or remedies
         and any  plead  ings or  similar  material;  provided,  however,  that
         failure to provide any such  written  notice or any such copies  shall
         not affect the  validity  of any action  undertaken  or render  either
         Crescent  or  Magellan  liable to the other or to any other  person or
         entity.


2.4      In Furtherance of Subordination.


(a)     In the  event  (i)  of  any  distribution,  division  or  application,
        voluntary or involuntary,  by operation of law or otherwise, of all or
        any substantial part of the assets or business of OpCo or any OpCo Sub
        to creditors  of OpCo or any OpCo Sub, or (ii) upon any indebt  edness
        of OpCo or any OpCo Sub  becoming  due and  payable  by  reason of any
        dissolu tion,  liquidation or other winding up of OpCo or any OpCo Sub
        or its business, or by reason of any sale,  receivership,  insolvency,
        reorganization or bankruptcy  proceedings,  assignment for the benefit
        of creditors,  or any  arrangement or proceeding by or against OpCo or
        any OpCo Sub for any relief  under any  Debtor  Relief  Laws  (whether
        voluntary or  involuntary),  or any other marshaling of the assets and
        liabilities  of OpCo or any  OpCo  Sub,  until  the Rent  (other  than
        Non-Priority  Additional  Rent)  has  been  paid  in full  (sub  ject,
        however,  to the terms of  Section  3.4 below)  (A) all  payments  and
        distributions of any kind or character  (whether in cash,  property or
        securities)  in respect of the Franchise  Fees to which Magellan would
        be entitled if the Franchise  Fees were not  subordinated  as provided
        herein  shall  be  made  directly  to  Crescent  for   application  in
        accordance  with the terms of the Lease,  and (B)  Magellan  shall not
        seek  the  lifting,  for its own  benefit,  of any  automatic  stay or
        similar  restriction  imposed  by  reason of any such  arrangement  or
        proceeding.
                                       -6-











(b)     All payments or distributions on or with respect to the Franchise Fees
        which are  received by Magellan  contrary  to the  provisions  of this
        Agreement,  whether  in  cash,  properties  or  securities  (including
        without  limitation  any  distributions  received  on  account  of any
        security interests,  liens, or other encumbrances),  shall be received
        in trust for the benefit of Crescent,  shall be segregated  from other
        funds and property  held by Magellan and shall be forthwith  paid over
        to  Crescent  in the same form as so  received  (with  any neces  sary
        endorsement)  to be  applied  (in the  case of  cash)  to,  or held as
        collateral (in the case of non-cash  property or securities)  for, the
        payment or prepayment of the Rent (other than Non-Priority  Additional
        Rent) in accordance  with the terms of the Lease.  In the event of any
        failure  by  Magellan  to make any  such  endorsement  or  assignment,
        Crescent is hereby irrevocably authorized to make the same.


(c)     Magellan shall file in a timely manner a claim or claims,  in the form
        required in any proceeding  described in subsection (a) above, for the
        full   outstanding   amount  of  the  Franchise  Fees  and  shall  use
        commercially  reasonable best efforts to cause said claim or claims to
        be  approved  and all  payments  and other  distributions  in  respect
        thereof to be made  directly  to  Crescent  until all Rent (other than
        Non-Priority  Additional  Rent) pay able under the Lease has been paid
        in full. Magellan  irrevocably  authorizes and empow ers Crescent,  in
        connection with any proceeding or distribution described in subsection
        (a) above, in the name of Magellan or otherwise,  to demand,  sue for,
        collect  and  receive  and  receipt  for any and all such  payments or
        distributions,  and  file,  prove,  and  vote or  consent  in any such
        proceedings with respect to any and all claims of Magellan relating to
        the Franchise Fees if Magellan shall not have duly filed such claim or
        proof of claim at least ten (10)  days  prior to the last day on which
        such claim or proof of claim may be filed.  Magellan  agrees  that (i)
        without the prior written consent of Crescent, which consent shall not
        be unreasonably  withheld, it will not vote such claim in favor of any
        plan of reorganization or similar structure (a "Plan") under which the
        terms of the Lease are  changed in any way,  and (ii) it will not vote
        against any Plan if Crescent votes in favor of the same unless,  under
        such Plan, the Franchise  Fees, or any portion  thereof,  would not be
        subordinate  in right of  payment  to  distributions  to  Crescent  on
        account  of  the  Rent  (other  than  Non-Priority  Additional  Rent).
        Magellan  further agrees that, in view of the difficulty of estimating
        damages from any violation by Magellan of the terms of this subsection
        (c),  Crescent  shall be entitled to  injunctive  relief to prevent or
        rescind any action taken by Magellan in  violation of this  subsection
        (c), as well as damages and other forms of relief available for breach
        of contract.


(d)      Crescent  shall be entitled  to enforce  specific  performance  of this
         Agreement  at any time when  Magellan  shall have failed to comply with
         any of the provisions of this Agreement

                                      -7-










         applicable to it. Magellan hereby  irrevocably waives any defense based
         on the  adequacy of a remedy at law which might be asserted as a bar to
         such remedy of specific perfor mance.


(e)      Nothing  provided in this  Agreement is intended to relieve OpCo of its
         obligation to pay Franchise Fees due under the Franchise Agreement.


2.5      Application  of  Payments  Received.  All  payments  and  distributions
         received by Crescent in respect of the  Franchise  Fees,  to the extent
         received in or converted into cash, may be applied by Crescent first to
         the payment of any and all expenses  (including  reasonable  attorneys'
         fees and legal expenses) paid or incurred by Crescent in enforcing this
         Agree ment or in  endeavoring  to  collect  or realize  upon any of the
         Franchise Fees or any secu rity therefor, and any balance shall, solely
         as between Magellan and Crescent, be applied by Crescent, in such order
         of  application  as Crescent may from time to time  select,  toward the
         payment of Rent (other than  Non-Priority  Additional  Rent)  remaining
         unpaid, but as between OpCo or any OpCo Sub and its creditors,  no such
         payments or distribu tions of any kind or character  shall be deemed to
         be payments or distributions in respect of Rent.


                                    ARTICLE 3

                                  MISCELLANEOUS

3.1      Notices.  Whenever any notice is required or permitted hereunder,  such
         notice  shall be in writing  and (a) sent by  certified  mail,  postage
         prepaid,  return receipt requested,  (b) given by established overnight
         commercial  courier for delivery on the next Business Day with delivery
         charges prepaid or duly charged,  (c) personally  hand-delivered or (d)
         sent by facsimile  transmission  with confirmation of receipt received,
         to the applicable address or facsimile number set forth below:


         As to Crescent:                Gerald W. Haddock
                                        President and Chief Executive Officer
                                        Crescent Real Estate Equities, Ltd.
                                        777 Main Street
                                        Suite 2100
                                        Fort Worth, Texas 76102
                                        Facsimile: (817) 878-0429



                                       -8-










         with copies to:           David M. Dean, Esq.
                                   Senior Vice President, Law
                                   Crescent Real Estate Equities, Ltd.
                                   777 Main Street
                                   Suite 2100
                                   Fort Worth, Texas 76102
                                   Facsimile: (817) 878-0429

                                   Wendelin A. White, Esq.
                                   Shaw, Pittman, Potts & Trowbridge
                                   2300 N Street, N.W.
                                   Washington, DC 20037
                                   Facsimile: (202) 663-8007

         As to OpCo or any
         OpCo Sub:                 Charter Behavioral Health Systems, LLC
                                   3414 Peachtree Road, N.E.
                                   Suite 900
                                   Atlanta, Georgia 30326
                                   Attn: Chief Legal Counsel
                                   Facsimile: (404) 814-5793


         with a copy to:

         As to Magellan:           Steve J. Davis, Esq.
                                   Executive Vice President,
                                   Administrative Services and General Counsel
                                   3414 Peachtree Road, N.E.
                                   Suite 1400
                                   Atlanta, Georgia 30326
                                   Facsimile: (404) 814-5793

         with a copy to:           Robert W. Miller
                                   King & Spalding
                                   191 Peachtree Street
                                   Atlanta, Georgia 30303-1763
                                   Facsimile: (404) 572-5100


                                       -9-










Notices which are mailed shall be deemed  effective upon receipt.  Notices which
are hand-delivered  shall be deemed effective upon tender to a natural person at
the address  shown.  Notices which are  delivered by overnight  courier shall be
deemed given on the next Business Day after  delivery to such  courier.  Notices
which are  delivered by facsimile  transmission  shall be deemed  received  upon
electronic confirmation of delivery.

3.2      No Waivers.  No failure or delay on the part of any party to  exercise,
         and no course of dealing with respect to, any right, power or privilege
         under this  Agreement  or any docu ment or  instrument  relating to the
         Lease or the Franchise  Agreement shall operate as a waiver thereof. No
         single or partial exercise of any such right,  power or privilege shall
         preclude any other or further  exercise  thereof or the exercise of any
         other  right,  power or  privilege.  The remedies  herein  provided are
         cumulative and not exclusive of any reme dies provided by law.


3.3      Amendments,  Supplements and Waivers.  The provisions of this Agreement
         may not be amended,  modified or waived except by the written agreement
         of  Magellan  and  Crescent  (without  any  necessity  for notice to or
         consent by OpCo or any OpCo Sub, which notice and consent are expressly
         WAIVED by OpCo).  The provisions of this Agreement  shall be solely for
         the  benefit of  Crescent  and  Magellan  and may not be relied upon or
         enforced by OpCo, any OpCo Sub or any other person or entity other than
         Crescent and Magellan.


3.4      Continuing  Agreement;  Successors  and  Assigns.  This  Agreement is a
         continuing agree ment and shall be binding upon and, except as provided
         in Section 3.3, inure to the benefit of each of the parties hereto, and
         their respective successors and assigns.  Further, this Agreement shall
         remain in full force and effect  until the Rent shall have been  irrevo
         cably  paid  in  full  and  shall  continue  to  be  effective,  or  be
         reinstated,  as the case may be, if at any time any  payment  of all or
         any part of the  Rent (a  "Returned  Payment")  is re  scinded  or must
         otherwise be returned upon the insolvency, bankruptcy or reorganization
         of OpCo or any OpCo Sub,  or by reason  of the  operation  of any other
         applicable law or order of court (a "Rescission  Event"), all as though
         such payment had not been made.  No party  hereto  shall sell,  assign,
         pledge, encumber or otherwise dispose of the Franchise Agreement or the
         Lease,  as the case may be, or any amounts payable  thereunder,  unless
         such sale,  assignment,  pledge,  encumbrance  or  disposition  is made
         expressly  subject  to the  terms  and  provisions  of this  Agreement.
         Nothing  herein is  intended  or shall be  construed  to give any other
         person any right,  remedy or claim with respect to this Agree ment, the
         Lease,  or the  Franchise  Agreement.  Notwithstanding  the  foregoing,
         Magellan  shall be entitled to  collaterally  assign its rights but not
         its obligations under the Franchise Agreement, subject to the terms and
         provisions  of  this  Agreement,  as  well  as its  rights  but not its
         obligations under this Agreement, to any of its lenders.

                                      -10-











3.5      Severability. If any provision of this Agreement is held to be illegal,
         invalid or unen forceable  under present or future laws during the term
         hereof,  such provision shall be fully severable,  this Agreement shall
         be construed and enforced as if such illegal,  invalid or unenforceable
         provision had never  comprised a part hereof,  and the remaining  provi
         sions  hereof  shall  remain in full  force and effect and shall not be
         affected by the illegal,  invalid or unenforceable  provision or by its
         severance herefrom.  Furthermore,  in lieu of such illegal,  invalid or
         unenforceable provision there shall be added automatically as a part of
         this Agreement a legal,  valid and enforceable  provision as similar in
         terms to the  illegal,  invalid or  unenforceable  provision  as may be
         possible.


3.6      Counterparts.   This  Agreement  may  be  executed  in  any  number  of
         counterparts,  all of which taken together shall constitute one and the
         same  instrument.  In making  proof of this  Agreement  it shall not be
         necessary to produce or account for more than one such counterpart.


3.7      GOVERNING LAW.  THIS AGREEMENT SHALL BE CONSTRUED AND GOV
         ERNED BY THE LAWS OF THE STATE OF DELAWARE AND THE UNITED
         STATES OF AMERICA.


3.8      WAIVER  OF JURY  TRIAL.  EACH OF OPCO,  MAGELLAN  AND  CRESCENT  hereby
         irrevocably waives, to the full extent permitted by applicable law, any
         right to have a jury  participate in resolving any dispute  arising out
         of, in connection with, related to, or incidental to this Agreement.


3.9      ENTIRE AGREEMENT.  THIS WRITTEN AGREEMENT REPRESENTS THE FINAL
         AGREEMENT AMONG THE PARTIES WITH RESPECT TO THE SUBJECT MAT
         TER HEREOF AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
         CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PAR
         TIES HERETO.  THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG
         THE PARTIES.


3.10     Amendment  of Franchise  Agreement.  Magellan  agrees that,  unless and
         until all Rent (other  than  Non-Priority  Additional  Rent) shall have
         been  irrevocably  paid in full  (sub  ject,  however,  to the terms of
         Section 3.4 above) and the Term shall have expired, with out Crescent's
         prior  written  consent the Franchise  Agreement  shall not be amended,
         modified,  or  supplemented by any of the parties thereto in any manner
         that would in crease or accelerate payment of the Franchise Fees or any
         installment  thereof,  except for an increase in the Franchise  Fees in
         connection  with  the  addition  of a  new  Leased  Prop  erty  to  the
         facilities covered by the Franchise Agreement or in connection with the
         imple   mentation  of  New  Products  (as  defined  in  the   Franchise
         Agreement).  If the Franchise  Agreement is amended without  Crescent's
         prior written  consent in a manner that violates the provisions of this
         Section  3.10,  then the increased or  accelerated  portion of the Fran
         chise Fees  shall be  subordinate  and  junior in right of payment  and
         liquidation  to the  prior  irrevocable  payment  in full of all  Rent,
         Additional Rent (including all Non-Priority  Additional  Rent), and all
         Additional Charges.


3.11     No Subrogation Until Payment in Full.  Without Crescent's prior written
         consent, Magel lan shall not be entitled to be subrogated to any of the
         rights of Crescent  against OpCo,  any OpCo Sub, or any other person or
         entity,  or any  liens,  security  interests  or  assign  ments  now or
         hereafter  securing  the  Lease,  until  all of the  Rent  (other  than
         Non-Priority  Additional Rent) shall have been irrevocably paid in full
         (subject,  however,  to the terms of  Section  3.4  above) and the Term
         shall have expired.


3.12     Amendment  of Lease.  Crescent  may, at any time and from time to time,
         without the consent of or notice to Magellan,  and without impairing or
         releasing the  obligations  of Magellan  hereunder,  (a) enter into any
         amendment or modification of the Lease, includ ing, without limitation,
         any  amendment  which  extends  the  maturity  of the Fixed Term or any
         Extended  Term,  except  the  fourth  Extended  Term (as such terms are
         defined in the Lease),  of the Lease (whether or not in accordance with
         the  renewal  options  set forth  therein)  or extends  or reduces  any
         installment  of  Rent  or  waives  any  Default  or  Event  of  Default
         thereunder;  (b) exercise or refrain from exercising any rights against
         OpCo,  any OpCo Sub or any other  person or entity;  (c) subject to the
         terms  and  provisions  of  Section  2.5  hereof,  apply  any  sums  by
         whomsoever paid or however realized to the Lease;  (d) sell,  exchange,
         release, surrender,  realize upon or otherwise deal with, in any manner
         and in any order, any property whatsoever and by whomsoever at any time
         pledged or mort gaged to secure the Lease; (e) release anyone liable in
         any manner for the payment or collection of any Rent, and (f) settle or
         compromise  all or any part of the Rent and subor dinate the payment of
         any  part  of the  Rent  to the  payment  of  any  other  indebtedness.
         Notwithstanding the foregoing, Crescent shall not, without prior notice
         to and written  consent of  Magellan,  amend or modify the Lease in any
         manner that would increase the amount or accelerate the payment of Rent
         or any installment thereof (other than Non-Priority Additional Rent and
         other than an increase in Rent in  connection  with the addition of new
         Leased  Properties to the Collective  Leased  Properties) or that would
         extend  the Term  beyond the fourth  Extended  Term.  In the event that
         Crescent, OpCo and the OpCo Subs amend the Lease to increase the amount
         or accelerate the payment of the Rent or any installment thereof (other
         than Non-Priority Additional Rent and other than

                                      -11-










         an  increase  in Rent in  connection  with the  addition  of new Leased
         Properties to the Collective Leased Properties) payable thereunder,  or
         to extend the Term  beyond the fourth  Extended  Term,  this  Agreement
         shall  remain in full  force and effect  and the  Franchise  Fees shall
         continue to be subject,  subordinate and junior in right of payment and
         liquidation  to the prior  irrevocable  payment of the Rent (other than
         Non-Priority Additional Rent) to the extent and in the manner set forth
         herein  as  though  the Rent  payable  under  the Lease had not been so
         increased  or the Term so  extended  beyond the fourth  Extended  Term;
         provided,  however, that in the event that Crescent,  OpCo and the OpCo
         Subs, without the prior written consent of Magellan, so amend the Lease
         to in crease the amount or  accelerate  the payment of Minimum  Rent or
         Additional Rent (other than  Non-Priority  Additional  Rent),  then the
         portion of the Rent  constituting  such in crease or the portion of the
         Rent or any installment thereof so accelerated, as applicable, shall be
         subordinate and junior in right of payment and liquidation to the prior
         irrevocable  payment  of the  Franchise  Fees to the  extent and in the
         manner  that the  Franchise  Fees  are  subordinated  pursuant  to this
         Agreement.


3.13     Further Assurances.  Each of Magellan and OpCo will, at its expense and
         at any time and from time to time,  promptly  execute  and  deliver all
         further   instruments  and  documents   (including  without  limitation
         assignments and proofs of claim),  and promptly take all further action
         (including, without limitation, filing proofs of claim and taking other
         actions to collect the Franchise  Fees), or cause such  instruments and
         documents  to be executed and  delivered  and such actions to be taken,
         that may be necessary or  desirable,  or that  Crescent may  reasonably
         request, in order to protect any right or interest granted or purported
         to be granted hereby or to enable  Crescent to exercise and enforce its
         rights and  remedies  hereunder.  For  purposes of this  Section  3.13,
         "promptly"  shall be deemed to mean within five (5) Business Days after
         written request therefor unless in the judg ment of Crescent, exercised
         in good  faith,  faster  action is  required  to achieve  the  intended
         purpose.


3.14     Representations  and  Warranties.  Each of Magellan,  Crescent and OpCo
         hereby  repre sents and  warrants as to itself that (i) the  execution,
         delivery and performance by such party of this Agreement have been duly
         and validly  authorized by all necessary action and (ii) this Agreement
         has been duly and  validly  executed  and  delivered  by such party and
         constitutes  the legal,  valid and  binding  obligation  of such party,
         enforceable  against such party in accordance with its terms, except as
         such  enforcement  may be  limited  by  bank  ruptcy,  conservatorship,
         receivership,   insolvency,   moratorium  or  similar  laws   affecting
         creditors' rights generally or by general principles of equity.

                                      -12-











3.15     Expenses,  Etc. OpCo agrees to pay, upon demand, to Crescent the amount
         of any and all  losses,  costs  and  expenses,  including  the fees and
         expenses of Crescent's counsel, which Crescent may incur as a result of
         any breach by OpCo of its  obligations  hereunder or in connection with
         the exercise or  enforcement  of any of Crescent's  rights or interests
         hereunder, which exercise or enforcement results directly or indirectly
         from,  or arises by reason  of,  any  action or any  failure to take an
         action  required  of OpCo  hereunder.  Magel lan  agrees  to pay,  upon
         demand,  to  Crescent  the  amount  of any and all  losses,  costs  and
         expenses,  including the fees and expenses of Crescent's counsel, which
         Crescent  may  incur as a  result  of any  breach  by  Magellan  of its
         obligations hereunder or in connection with the exercise or enforcement
         of any of Crescent's rights or interests  hereunder,  which exercise or
         enforcement  results  directly or indirectly  from, or arises by reason
         of, any action or any  failure to take any action  required of Magellan
         hereunder. Crescent shall not have any obligation to make demand of, or
         take any action  against,  OpCo under this Section 3.15 prior to making
         demand of, or taking action against,  Magellan pursuant to this Section
         3.15.


3.16     Arbitration  in Some Events.  Disputes  between  Magellan and Crescent
         relating to amounts owing to Magellan or Crescent  under the Franchise
         Agreement  or the  Lease,  as such  agreements  are  affected  by this
         Agreement,  will be subject to  resolution by binding  arbitration  in
         Delaware before the American  Arbitration  Association and governed by
         the Commercial  Arbitration Rules then in effect. Nothing set forth in
         this Section 3.16, however, shall impair or restrict in any way either
         party's  right  to  seek  equitable  relief  in  connection  with  the
         enforcement of this Agreement.


3.17     Consent to Assumption of Franchise Agreement.  Magellan hereby consents
         to the  assumption by Crescent or Crescent's  designee of the Franchise
         Agreement and all rights and  obligations of the franchisee  thereunder
         from the date of such assumption in the event of an Event of Default by
         OpCo under the Lease and exercise by Crescent of its  election,  in its
         sole and  absolute  discretion,  under the remedies  provisions  of the
         Lease  to  assume  or  have  its  designee  assume  all of the  revenue
         producing contracts relating to the Collec tive Leased Properties.









                                      -13-














     IN WITNESS  WHEREOF,  the parties hereto have executed this Agreement as of
the date first set forth above.


WITNESS:                             CRESCENT REAL ESTATE EQUITIES
                                     LIMITED PARTNERSHIP

                                     By: Crescent Real Estate Equities, Ltd.,
                                             a Delaware corporation

By:                                  By: _______________________________
Name: ________________________         Gerald Haddock
Title: _________________________       President and Chief Executive Officer


                                     CHARTER BEHAVIORAL HEALTH
                                     SYSTEMS, LLC

                                     By: [Magellan Member]
By: ___________________________      By: ________________________________
Name: _________________________      Name: ______________________________
Title: _________________________     Title: _______________________________

                                     By: [Crescent Member]
By: __________________________       By: ________________________________
Name: ________________________       Name: ______________________________
Title: _________________________     Title: _______________________________

                                     MAGELLAN HEALTH SERVICES, INC.

By: ___________________________      By: ________________________________
Name:  ________________________      Name: ______________________________
Title: _________________________     Title: _______________________________

                                               [ADD ACKNOWLEDGMENTS]


                                      -14-