EXHIBIT 2(b)


STOCK PURCHASE AGREEMENT dated 2 April 1999

among

CHARTER MEDICAL INTERNATIONAL, S.A., INC., a company incorporated in Nevada
whose principal office is at 3414 Peachtree Road, NE Suite 1400, Atlanta,
Georgia 30326, USA (the "Seller"),

MAGELLAN HEALTH SERVICES, INC. a company incorporated in Delaware whose
principal office is at 3414 Peachtree Road, NE Suite 1400, Atlanta, Georgia
30326, USA ("Magellan"),

GROGRUNDEN 515 AB a company incorporated in Sweden with registered number
[556561-0390] whose principal office is at c/o Investment AB Bure, Box 541440229
Gothenburg, Sweden (the "Buyer"),

and

INVESTMENT AB BURE a company incorporated in Sweden whose principal office is at
PO Box 5419, 5-402 29, Goteborg, Sweden ("Bure")

concerning

SOCIETE ANONYME DE LA METAIRIE ("the Company").

RECITALS

This is the Swiss Sale Agreement referred to in the share purchase agreement of
the same date (the "Charter Medical Agreement") made among Charter Medical
International S.A., Inc., Magellan Health Services, Inc., Investment AB Bure and
CMEL Holding Limited.

The Company, whose seat is at Avenue de Bois-Bougy 18, 1260 Nyon, Switzerland,
is a Swiss company incorporated as a limited company with a fully paid-up share
capital of CHF 300'000.- (three hundred thousand Swiss Francs) divided into 300
(three hundred) registered shares having a par value of CHF 1'000.- (one
thousand) each.

The Seller is the beneficial owner of the entire share capital of the Company.

The Seller is willing to sell to the Buyer and the Buyer is willing to purchase
from the Seller the entire share capital of the Company on the terms and
conditions of this Agreement.

THE PARTIES AGREE AS FOLLOWS :

1.       Purchase and Sale of Shares

1.1.     Purchase and Sale

                                       1


         Upon the terms and subject to the conditions of this Agreement (the
         "Agreement"), the Seller agrees to sell to the Buyer and the Buyer
         agrees to purchase from the Seller the entire share capital of the
         Company of 300 (three hundred) registered shares having a par value of
         CHF 1'000.- each (one thousand Swiss Francs) (the "Sale Shares") free
         and clear of all liens, charges, pledges, security interests,
         encumbrances, restrictions and claims of any kind whatsoever including
         all rights to dividends or other distributions declared after the date
         of execution of this Agreement.

1.2.     Purchase Price

         The purchase price (the "Purchase Price") for the Sale Shares shall be
         US$23,364,000 together with an extension payment equal to interest on
         US$23,364,000 calculated at the rate of 2% per annum above the base
         rate from time to time of the Royal Bank of Scotland from 31 March 1999
         to the Closing Date and subject to such increase or decrease (if any)
         as may be required pursuant to Schedule 1 of this Agreement.

2.       Conditions and Closing

2.1      The completion of the transaction contemplated herein (the "Closing")
         is conditional upon the simultaneous closing of the Charter Medical
         Agreement. In the event of any termination of the Charter Medical
         Agreement prior to Closing, this Agreement shall automatically
         terminate.

2.2.     Place and date

         Closing shall take place on the date and at the time and place at which
         the Closing occurs under the Charter Medical Agreement.

2.3.     Closing Documents

(a)      Upon Closing, the Seller shall deliver to the Buyer :

         (i)      the certificates representing the Sale Shares duly endorsed in
                  blank;

         (ii)     a resolution of the Company's Board of Directors authorising
                  the Buyer's registration in the Company's share register;

         (iii)    the Company's share register, evidencing the registration of
                  the Buyer as shareholder for the Sale Shares;

         (iv)     unconditional and irrevocable resignation letters from the
                  Company's board of directors, with effect as of the date of
                  Closing, each containing a statement of the resigning director
                  that he has been fully compensated for his services rendered
                  to the Company and that he has no claim of whatever nature
                  against the Company; and

                                      -2-


         (v)      a written confirmation as of the Closing of the accuracy of
                  the Pension Fund Certificate attached as Exhibit A.

         (vi)     a legal opinion of Bourgeois, Muller Pidoux & Associes in
                  a form reasonably acceptable to the Buyer as to the non
                  applicability of the statutes referred to in Clause 3.1.11.

         (vii)    evidence, reasonably satisfactory to the Buyer, of the
                  discharge of the two mortgages on the property owned by the
                  Company registered in the extract of the Land Registry of
                  Nyon.

(b)      Upon Closing, the Buyer shall deliver to the Seller the Purchase Price
         in immediately available funds to a dollar account with a UK bank in
         London designated by the Seller not less than three days prior to the
         Closing Date.

2.4      The Buyer shall not be obliged to close the sale and purchase of the
         Sale Shares unless all requirements of clauses 2.1 and 2.3 are complied
         with.

3.       Representations and Warranties

3.1.     The Buyer is entering into this Agreement in reliance upon the
         representations and warranties contained in this Clause 3. The Buyer
         confirms that it has no actual knowledge as of the date hereof of any
         matter which constitutes a breach of any representation or warranty of
         the Seller.

         The Seller makes the following representations and warranties to the
         Buyer as of the date of signature of this Agreement and the Seller
         warrants that the following representations and warranties shall be
         accurate on the date of Closing as if restated on such date.

         The Seller undertakes to disclose in writing to the Buyer anything
         which is a breach of any warranty immediately after it comes to the
         Seller's notice after Closing.

         3.1.1    Organisation of the Seller and Magellan

                  The Seller is a corporation duly incorporated, validly
                  existing and in good standing under the laws of the State of
                  Nevada. Magellan is a corporation duly incorporated, validly
                  existing and in good standing under the laws of the State of
                  Delaware.

         3.1.2    Authority

                  Each of Magellan and the Seller has the requisite power and
                  authority to sign this Agreement and to consummate the
                  transactions contemplated herein. This Agreement has been duly
                  authorised, executed and delivered by each of Magellan and the
                  Seller and constitutes a valid and binding obligation of each
                  of Magellan and the Seller, enforceable in accordance with its
                  terms.

                                      -3-


                  No consent is required to authorise the execution and
                  performance of this Agreement or the consummation of any of
                  the transactions contemplated thereby.

         3.1.3    Organisation of the Company

                  The Company is a Swiss company duly incorporated, validly
                  existing and in good standing under the laws of Switzerland.
                  The extract from the Commercial Registry and the Articles of
                  Association of the Company which are attached hereto as
                  Exhibits B and C are true, correct and complete as of the date
                  hereof.

         3.1.4    Consequences of Sale

                  The execution, delivery and performance of this Agreement will
                  not (i) conflict with or violate any provision of the Articles
                  of Association of the Company, or (ii) violate, conflict with
                  or result in a breach of any provision of, or constitute a
                  default under, or accelerate the performance of any agreement
                  to which the Company is a party , or (iii) result in the
                  creation of any lien, security interest, charge, claim or
                  encumbrance upon any of the properties or assets of the
                  Company, or (iv) conflict with, violate or result in a breach
                  of any law, regulation, order, decree or writ applicable to
                  the Company or to the Seller, or (v) violate any judgement,
                  order, or award of any court, arbitrator or any governmental
                  administrative or regulatory authority, or (vi) result in any
                  present indebtedness of the Company becoming due and payable
                  or capable of being declared due and payable prior to its
                  stated maturity, or (vii) entitle any person to receive from
                  the Company any finder's fee brokerage or other commission.

         3.1.5    Capitalisation

                  (i)      The issued share capital of the Company consists of
                           300 registered shares having a par value of CHF
                           1'000.- each;

                  (ii)     All the Sale Shares and all the share certificates
                           relating to the Sale Shares are duly and validly
                           authorised and issued on 2 July 1985 and the Sale
                           Shares are fully paid;

                  (iii)    There are not any options, warrants, calls, rights of
                           conversion, or other rights, commitments, agreements
                           of any character to which the Seller or the Company
                           is a party or by which any of them is bound,
                           obligating the Seller or the Company to issue,
                           deliver, sell or cause to be issued, delivered or
                           sold, additional shares of the Company to extend or
                           enter into any such option, warrant, call, right,
                           commitment or agreement;

                  (iv)     The Seller has good, legal, beneficial and valid
                           title to the Sale Shares, free and clear of all
                           liens, charges, security interests, claims and other
                           encumbrances; and

                                      -4-


                  (v)      Since 30 September 1998, the Company has not declared
                           any distributions to shareholders.

         3.1.6    Financial Statements

                  The Seller has previously delivered to the Buyer true and
                  complete copies of the Company's audited financial statements
                  (balance sheets and profit and loss statements, including the
                  explanatory notes related thereto) as at 30 September, 1998,
                  1997, and 1996, which are attached hereto as Exhibit D (the
                  "Financial Statements"). The Financial Statements have been
                  prepared according to Swiss accounting principles.

                  The Financial Statements:

                  (i)      gave a fair view of the assets, liabilities and state
                           of affairs of the Company as at 30 September, 1998,
                           1997 and 1996 and of the profits and losses for the
                           financial periods ended on these dates;

                  (ii)     were prepared in accordance with all applicable
                           accounting principles and practices generally
                           accepted at the date of this Agreement in Switzerland
                           and are true and accurate in all material aspects;

                  (iii)    complied with the requirements of Swiss law; and

                  (iv)     include appropriate provision for bad and doubtful
                           debts and for taxation on profits (whether of an
                           income or capital nature) relating to any period on
                           or before the date to which they relate.

                  As of 30 September, 1998, the Company had no liabilities or
                  obligations of any nature which were required by Swiss
                  generally accepted accounting principles to be disclosed in
                  the Financial Statements other than those reflected in the
                  1998 Financial Statements (as defined in clause 3.1.9).

                  The accounts receivable shown on the balance sheet for the
                  year ended 30 September, 1998 have been collected or are
                  collectable in amounts which are consistent with the provision
                  for bad debts made in such balance sheet. Each of such
                  accounts receivable exists without setoff and is not subject
                  of a pledge or assignment to secure debt.

         3.1.7    Absence of Change

                  Since 30 September, 1998, the Company has conducted its
                  business in the ordinary course, consistent with prior
                  practice, and since such date, there has not been any material
                  adverse change in the business, assets, liabilities, financial
                  condition or results of operations of the Company.

         3.1.8    Records and books

                                      -5-


                  The Company is in possession of all documents and records
                  required for the conduct of its activities.

                  All accounts, books, ledgers, and other financial records of
the Company:

                  (i)      have been properly maintained and contain accurate
                           records of all material matters required to be
                           entered in them by applicable law; and

                  (ii)     correctly state, in all material respects, the
                           matters which ought to appear in them consistently
                           with past accounting practices of the Company.

                  The Company does not carry on businesses under names other
                  than its corporate name.

         3.1.9    Assets

                  The Company has good, legal, beneficial and valid title to all
                  assets reflected in the Financial Statements as at 30
                  September, 1998 (the "1998 Financial Statements") and all
                  assets acquired since that date are free and clear of any
                  lien, security interest and encumbrance not reflected in the
                  1998 Financial Statements. These assets allow the Company to
                  conduct its business as currently conducted. All such assets
                  which are capable of possession are in the possession of the
                  Company.

                  The Company has not agreed to acquire any asset on terms that
                  title in it does not pass until full payment is made.

         3.1.10   Intellectual property rights

                  The Company has no registered trademarks or trade names. The
                  Company has used TRIMS software provided by arrangement with
                  Magellan. The Company uses software pursuant to licences with
                  third party licensors and the Company is not in default under
                  any such licence which is material to the business of the
                  Company. So far as the Seller is aware, the Company is not in
                  breach of any intellectual property rights of any third party.

                  The Seller has disclosed to the Buyer its plans (the "Plans")
                  designed to address the operational issues of the computers
                  and computer systems used in connection with the Company's
                  business (including software and hardware, referred to in this
                  case as the "IT System") which are expected to arise in
                  connection with the change in year from 1999 to 2000,
                  including any related change in the field configuration
                  containing date information within the IT System ("Y2K
                  Matters").. The Seller has no reason to believe that if the
                  Company continues to implement the Plans in the same manner as
                  it has done prior to the date of this Agreement (and assuming
                  no material change is made in the present IT System), there
                  will be any material adverse effect on the Company's business
                  resulting from Y2K Matters.

                                      -6-


                  The Company has complied with all data protection laws in
                  Switzerland in all material respects.

         3.1.11   Real estate

                  The Company legally and beneficially owns and has good title
                  to a parcel of land registered with the Land Registry of Nyon
                  under N(degree) 1174. This parcel of land has a surface of
                  81'640 sqm. The relevant extract from the Land Registry of
                  Nyon, which is attached hereto as Exhibit E, is a true,
                  correct and complete copy thereof.

                  Such real estate is free and clear of any lien, security
                  interest and encumbrance not mentioned in such extract. There
                  are no material agreements, instruments, rights or obligations
                  relating to such real estate, including but not limited to,
                  agreements to sell or lease such real estate, or rights of
                  first refusal or occupation rights. The Seller is not aware of
                  any encumbrances which would have any material adverse impact
                  on the value or use of such real estate other than any which
                  are disclosed in Exhibit E. There are no restrictions under
                  any Swiss laws governing a transfer of land in Switzerland
                  which would prevent the lawful transfer of such real estate
                  and, in particular, the sale of the Sale Shares and the
                  transfer of such real estate resulting therefrom, will not in
                  any way be affected by the "LOI FEDERALE SUR L'ACQUISITION
                  D'IMMEUBLES PAR DES PERSONNES A L'ETRANGER" or the "LOI
                  FEDERALE SUR LE DROIT FONCIER RURAL". The Seller does not own
                  any other real property other than that details of which are
                  attached hereto as Exhibit E.

                  There has been no material breach of any regulations relating
                  to the use of the real estate.

         3.1.12   No undisclosed liabilities

                  , Since30 September 1998, the Company has not incurred any
                  material liability or obligation of any nature (absolute,
                  accrued, contingent or otherwise) other than trade creditors
                  payable in the ordinary course of business and has not entered
                  into any material financial commitment, conditional or
                  unconditional or actual which is material to the condition of
                  the Company.

         3.1.13   Subsidiary and branch

                  The Company does not have any subsidiary or any branch in or
                  outside Switzerland.

         3.1.14   Contracts

                  All contracts to which the Company is a party have been duly
                  performed in all material respects.

                  Exhibit F contains a list of all material contracts entered
                  into by the Company.

                                      -7-


                  The Company is not a party to any contract which can be
                  terminated or which would be breached in the event of any
                  change in the ownership or control of the Company.

                  There has been disclosed to the Buyer full details of all
                  discounts, overrides, rebates, allowances and other special
                  terms or similar arrangements which are material to the
                  business of the Company as a whole and offered or granted to
                  the Company or by the Company in respect of hospitals,
                  insurers or any other person obtained within the period of 12
                  months preceding the date of this Agreement.

                  So far as the Seller is aware not having made enquiry of
                  suppliers or customers, no material supplier or customer of
                  the Company has during the period of 12 months preceding the
                  date of this Agreement indicated an intention to cease trading
                  with or materially alter the terms, on which it trades with
                  the Company.

         3.1.15   Related Party Contracts

                  Except for the purchase of shares of Magellan by the Company
                  the particulars of which are set out in the Notes to the
                  Financial Statements for the period ended 30 September 1997
                  and for the TRIMS Software referred to in Clause 3.1.10, the
                  Company has not entered into any contract, arrangement or
                  agreement through which the Seller derives any direct or
                  indirect benefit.

                  Except as set out in the preceding paragraph, there will not
                  be outstanding at Closing:

                  (i)      any indebtedness or other liability (actual or
                           contingent) owing by the Company to the Seller, any
                           affiliate of the Seller, or any director or related
                           person of the Seller, or owing to the Company by the
                           Seller, any affiliate of the Seller, or by any
                           director or any related person of the Seller; or

                  (ii)     any guarantee or security for any such indebtedness
                           or liability as aforesaid.

         3.1.16   Taxes

                  (i)      All material tax returns or reports of the Company
                           that are required to be filed by or with respect to
                           the Company [ have been filed punctually;

                  (ii)     So far as the Seller is aware, there is no dispute,
                           or any facts or circumstances likely to give rise to
                           any dispute, with any tax authority as regards either
                           the liability to tax (whether actual or contingent
                           and including the amount of any fine, penalty or
                           interest) of the Company or the availability of any
                           relief or right to repayment of tax to the Company.

                  (iii)    The taxation affairs of the Company have not during
                           the period of seven years prior to the date of this
                           Agreement been the subject of any 

                                      -8-


                           investigation or enquiry by any tax authority (other
                           than routine questions), the Company has not received
                           notice from any tax authority that it intends to
                           investigate the taxation affairs of the Company and
                           so far as the Seller is aware there are no
                           circumstances which are likely to give rise to any
                           such investigation.

                  (iv)     no taxing authority is now asserting any deficiency
                           or claim for additional taxes (or interest thereon or
                           penalties in connection therewith); and

                  (v)      to the extent taxes relate to any period prior to
                           Closing such taxes have either been paid or full
                           provision has been made for them in the 1998
                           Financial Statements.

                           For the purposes of this Agreement, the term "taxes"
                           shall mean all income, profits, capital gains,
                           withholding taxes, stamp duties and other taxes
                           relating to the Company levied by any national,
                           cantonal, municipal or foreign taxing authority,
                           together with any interest and any penalty imposed by
                           any such taxing authority with respect thereto.

                           To the knowledge of the Seller, there are no facts or
                           circumstances existing or having arisen prior to to
                           the date of this Agreement which have or may lead to
                           a reassessment of taxes by any taxing authority.

         3.1.17   Employment matters

                  (i)      There is no collective bargaining agreement to which
                           the Company is a party or by which it is bound, or
                           which is currently negotiated.

                  (ii)     Exhibit G contains an exhaustive list as of 30 March,
                           1999 of all employment contracts and details thereof
                           entered into by the Company which are still in
                           effect. There have been no material changes to such
                           contracts or any additional contracts with employees
                           other than as set out in Exhibit G.

                  (iii)    Since 30 September, 1998, no material change has been
                           made in the rate of remuneration or pension benefits
                           of any officer or executive of the Company.

                  (iv)     There are no outstanding pay negotiations in
                           connection with any of the Company's employees and
                           the Company is not obliged to increase the amount
                           payable to its directors and employees by more than
                           5% since 30 September 1998.

                  (v)      There are no amounts owing to present or former
                           directors or employees other than for one months
                           arrears of remuneration accrued or due or for
                           reimbursement of business expenses incurred within
                           three months of the date hereof.

                                      -9-


                  (vi)     To the knowledge of the Seller, no employee of the
                           Company nor the Company is in breach of any material
                           terms of an employee's employment agreement.

                  (vii)    All employee vacation entitlement (other than one
                           months entitlement accruing to Ms Sylvie Francey) has
                           been or will have been taken as of Closing or will be
                           provided for in the Closing balance sheet.

         3.1.18   Swiss Social Security

                  (i)      Any and all returns and reports related to Social
                           Security Contributions that are required to be filed
                           by or with respect to the Company prior to the
                           Closing have been punctually and properly filed;

                  (ii)     the Company has paid in full any and all Social
                           Security Contributions as and when due;

                  (iii)    no competent Swiss social security authority is now
                           asserting any deficiency or claim for additional
                           Social Security Contributions (or interests thereon
                           or penalties in connection therewith); and

                  (iv)     any and all Social Security Contributions which
                           (although not due) have accrued on the basis of the
                           salaries to be paid until the Closing, have been or
                           will be fully provided for in the Closing Accounts.

                           For the purpose of this Agreement, the term "Social
                           Security Contributions" shall mean the mandatory
                           contributions to the old-age pension insurance scheme
                           (AVS), invalidity insurance (AI), loss of salary
                           insurance (allocations pour perte de gain) and
                           unemployment insurance (assurance-chomage), together
                           with any interest or any penalty imposed by any
                           Social Security Authority with respect thereto.

                  (v)      The agreement concerning the employee pension fund of
                           the Company and the regulations relating thereto are
                           attached as Exhibit H (the "Pension Fund"). The
                           Company has complied with all its obligations under
                           the Pension Fund and specifically has paid or will
                           pay (or made or will make provision for) all
                           contributions required prior to Closing as stipulated
                           by the regulations of the Pension Fund.

                           Performance of these obligations is reflected in the
                           Pension Fund Certificate attached hereto as Exhibit
                           A. Upon Closing, the Seller shall deliver to the
                           Buyer a confirmation of the Pension Fund that the
                           statement contained in such Pension Fund Certificate
                           is still accurate and truthful as of the Closing. To
                           the knowledge of the Seller, all payments required by
                           Winterthur - Columna Foundation LPP to be made to
                           fund the Pension Fund have been made. The Company is
                           not required to contribute to any pension fund other
                           than the Pension Fund.

                                      -10-


         3.1.19   Insurance

                  The Company currently has in effect the insurance policies
                  listed on Exhibit I, copies of which have previously been
                  provided to the Buyer (the "Policies"). The Company is not in
                  any respect in material breach of the terms of any Policies.
                  Except in connection with claims made by Mr Buss, Mr Dubuis,
                  Mrs Rime and Mrs Sharifi (as disclosed in Exhibit J), there
                  are no claims currently outstanding under such Policies.

                  The Seller has maintained adequate insurance cover against
                  risks normally insured against by companies carrying on a
                  similar business and has maintained all insurance required by
                  law.

                  The Company has not done or omitted to do anything which might
                  result in an increase in the premium payable under any
                  insurance policy of the Company.

         3.1.20   Compliance with applicable law

                  The Company holds all licenses and authorisations (referred to
                  in this warranty as "Authorisations") necessary for the
                  conduct of its business and all conditions applicable to any
                  Authorisations have been and are being complied with in all
                  material aspects. There are no facts or circumstances known to
                  the Seller indicating that the Company is not conducting its
                  business in material compliance with all applicable laws and
                  regulations. The Company is registered with the appropriate
                  health authorities in accordance with the provisions of all
                  applicable laws and regulations.

                  Each Authorisation is in force and subject only to
                  requirements that have been satisfied (and nothing more
                  remains to be done under these requirements). There is no
                  indication that any Authorisation might be revoked, suspended,
                  cancelled, varied or not renewed. No Authorisation and no
                  condition to which any Authorisation is subject is personal to
                  the Seller.

                  Each action required for the renewal or extension of each
                  Authorisation has been taken.

                  No Authorisation will be revoked, suspended, cancelled, varied
                  or not renewed as a result of the execution or performance of
                  this Agreement.

                  The Licence pursuant to which the Company is authorised to
                  manage a hospital in Nyon is set out in Exhibit K.

         3.1.21   Consent

                  No consent, waiver, approval, authorisation, exemption,
                  registration, license or declaration is required to be made or
                  obtained by the Seller in connection with (i) 

                                      -11-


                  the execution, delivery or performance of this Agreement or
                  (ii) the consummation of any of the transactions provided for
                  hereby.

         3.1.22   Environmental matters

                  The Company complies and has at all times complied with all
                  applicable environmental laws and regulations in all material
                  respects and has obtained and is in compliance in all material
                  respects with all permits, licenses and other authorisations
                  required under any such environmental laws and regulations in
                  the conduct of its business. So far as the Seller is aware,
                  there are no damages, fines or other liabilities threatened,
                  due or owing by the Company as a result of past or present
                  failure to comply with such environmental laws and
                  regulations.

                  So far as the Seller is aware, there are no facts or
                  circumstances existing or having arisen prior to Closing which
                  constitute a material breach of any applicable environmental
                  laws and regulations.

         3.1.23   Legal proceedings

                  Except for the litigation described in Exhibit J, there is no
                  dispute, claim, action, arbitration, proceedings or
                  investigations by any person or by or before any governmental
                  authority or regulatory agency, court, or arbitral body, by or
                  against the Company pending or, to the knowledge of the Seller
                  threatened against the Company or any of the Company's
                  employees for whose actions it is responsible which would
                  result in a liability of the Company in excess of CHF10,000 or
                  would have a material adverse effect on the liabilities,
                  operations or financial condition of the Company.

                  As of the date hereof, no order has been made, petition
                  presented, resolution passed or meeting convened for the
                  winding-up of the Company, nor has any distress, execution or
                  other process been levied against the Company or action taken
                  to repossess goods in the Company's possession. The Company is
                  not subject to enforcement proceedings under the LOI
                  FEDERALE SUR LA POURSUITE POUR DETTES ET LA
                  FAILLITE.

                  As of the date hereof, no receiver (including an
                  administrative receiver or receiver and/or manager), or
                  administrator has been appointed of the whole or any part of
                  the assets or undertakings of the Company, and the Seller is
                  not aware of any circumstances likely to give rise to the
                  appointment of any such receiver or administrator. No petition
                  has been presented for an administration order in respect of
                  the Company.

         3.1.24   Equipment

                  All supplies, machinery and equipment of the Company are in
                  reasonable operating condition (fair wear and tear excepted
                  and having regard to its age) and 

                                      -12-


                  conform in all material respects with all applicable laws,
                  ordinances and regulations.

         3.1.25   Minutes of general meetings of shareholders and board of
                  directors meetings

                  True, correct and complete copies of the minutes of all
                  general meetings of shareholders of the Company for the period
                  commencing January 1984 to the Closing are available at the
                  seat of the Company.

3.2.     Representations and warranties of the Buyer

         The Buyer represents and warrants to the Seller as follows:

         a)       it is entitled to purchase the Sale Shares on the terms of
                  this Agreement without the consent of any third party;

         b)       it has full power to enter into and perform this Agreement,
                  and such documents will, when executed, constitute binding
                  obligations of the Buyer in accordance with its terms subject
                  to the operation of law as regards the availability of
                  equitable remedies and matters of public policy and the
                  application of the relevant statutory provisions, including
                  those regarding limitation periods, insolvency and competition
                  matters.

3.3.     Definition of Knowledge

         Where any representation or warranty is qualified by reference to the
         knowledge of the Seller or the Company, such representation or warranty
         shall be deemed to be given to the best of the knowledge, information
         and belief of the Seller or the Company as the Seller or the Company
         would have obtained after making reasonable inquiries of Olivier
         Bourgeois and Sylvie Francey.

3.4      In the event that prior to the Closing Date

         (i)      there occurs any act or omission which would constitute a
                  breach of any of the Warranties (whether or not such breach is
                  material) or which would make any of the Warranties inaccurate
                  or misleading and such act or omission becomes known to the
                  Buyer, or

         (ii)     it becomes apparent that the Seller is in breach of any of the
                  Warranties (whether or not such breach is material.

         the Buyer shall not be entitled to rescind this Agreement and shall
         proceed to Closing but without prejudice to its rights to claim for
         breach of the Warranties.

4.       Covenants

4.1      Conduct of the business prior to Closing

                                      -13-


         4.1.1    The Seller undertakes to the Buyer that between the date of
                  this Agreement and Closing:-

                  a)       no increase shall be made in the authorised, allotted
                           or issued share capital of the Company;

                  b)       no option, right of conversion, or right of
                           pre-emption shall be offered or granted by the
                           Company over the whole or any part of its share
                           capital whether issued or unissued; and

                  c)       no dividends or other distributions shall be
                           declared, made or paid by the Company.

         4.1.2    The Seller further undertakes to the Buyer that between the
                  date of this Agreement and Closing (save with the previous
                  written consent of the Buyer):-

                  a)       the business of the Company shall be carried on in
                           the ordinary course;

                  b)       the Company shall take all reasonable steps to
                           preserve and protect its business and assets; and

                  c)       all existing insurance policies relating to the
                           Company shall be maintained in full force and effect
                           and shall not be allowed to lapse, expire or be
                           forfeited or otherwise terminated.

                  d)       no encumbrance (other than liens arising in the
                           ordinary course of business) shall be created or
                           extended over any of the Company's assets;

                  e)       no capital commitment with an individual contract
                           value in excess of CHF 24,000 shall be entered into
                           by the Company except in the ordinary course of
                           business;

                  f)       the Company shall not dispose of or grant or agree to
                           dispose of or grant any option in respect of any
                           assets valued in excess of CHF 24,000 except in the
                           ordinary course of business;

                  g)       the Company shall not enter into, amend or terminate
                           any individual contract or commitment which involves
                           payments in excess of CHF 24,000 except in the
                           ordinary course of business;

                  h)       the Company shall not increase the compensation or
                           benefits paid or to become payable to any of its
                           officers or employees or agreed to do the same;

                  i)       the Company shall not appoint or terminate the
                           employment of or make any material variation to the
                           terms of employment of any director or senior
                           employee;

                                      -14-


                  j)       the Company shall not make or propose a material
                           change to any benefit of any kind which is payable on
                           a person's retirement, death or disability to or in
                           respect of any of the directors or employees or to
                           any pension scheme (other than a change required by
                           law) or, without limiting the foregoing, carry out
                           any action in relation to any scheme other than in
                           the ordinary course of operating such scheme;

                  k)       no amendment shall be made to the Company's articles
                           of association and no resolutions which are
                           inconsistent with the Company's articles of
                           association shall be made or proposed;

                  l)       no change shall be made in the date to which the
                           Company's audited financial statements are prepared;

                  m)       the Company shall not initiate, compromise or settle
                           any litigation, arbitration or mediation proceedings
                           other than debt collection conducted in the ordinary
                           course of business;

                  n)       the Company shall not make any commitment to do any
                           of the foregoing

                  provided that the Seller shall not be in breach of any
                  provisions contained in this clause 4.12 where the intention
                  of the Company to carry out any action which would otherwise
                  place the Seller in breach of this clause 4.12 has already
                  been disclosed to the Buyer in writing on the date of this
                  Agreement.

         4.1.3    The Seller shall procure the Company to cancel the Company
                  Stock Certificate No. 3 for one share and reissue a new and
                  valid Share Certificate for one share prior to Closing.

4.2      Restrictive Covenant

         4.2.1    For the purpose of assuring to the Buyer the full benefit of
                  the Company and in consideration for the Buyer agreeing to buy
                  the Sale Shares on the terms of this Agreement, each of the
                  Seller and Magellan, (referred to together in this Clause as
                  the "Covenantors") undertake to the Buyer that, except as
                  provided below, they will not, and will procure that no
                  subsidiary of the Seller or Magellan will, without the prior
                  written consent of the Buyer, whether directly or indirectly,
                  at any time within three years following Closing within
                  Denmark, Finland, Germany, Norway, Poland, Sweden, Switzerland
                  and the United Kingdom ("Restricted Territory"), whether alone
                  or in conjunction with, or on behalf of, any other person and
                  whether as principal, shareholder (other than solely as an
                  investor with no management function or controlling influence
                  of the Company in question), agent, consultant, partner or
                  otherwise, construct, own, lease, operate or manage, any of:
                  (i) an acute care psychiatric hospital, (ii) an acute care
                  psychiatric unit as part of an acute care general hospital,
                  (iii) a psychiatric residential 

                                      -15-


                  treatment center, (iv) a part of a facility operating a
                  psychiatric residential treatment center, (v) any facility
                  providing 24-hour psychiatric healthcare (vi) a psychiatric
                  daycare facility or (vii) any facility providing psychiatric
                  outpatient services (a "Competitive Business") provided,
                  however, that Magellan and the Seller, and the Subsidiaries of
                  Magellan and the Seller, may provide psychiatric outpatient
                  services required by or in connection with a contract to
                  provide utilisation management, network management, care
                  management and employee assistance programme services not
                  involving the transfer of intellectual property or know how to
                  any of the Company's competitors in the United Kingdom or
                  Switzerland provided that if any outpatient services are to be
                  provided within Switzerland, Magellan or any of the
                  subsidiaries shall use its reasonable endeavours to offer the
                  Buyer the opportunity to provide such outpatient services
                  substantially the same terms that Magellan or its relevant
                  subsidiary would be providing such services PROVIDED FURTHER,
                  that if the Buyer declined to provide such services pursuant
                  to any offer, then Magellan would be permitted to provide such
                  services (collectively "Managed Contract Services") for and on
                  behalf of a healthcare plan or entity (including self-assured
                  plans). Magellan agrees that neither it nor its subsidiaries
                  shall contribute capital to CBHS for the purpose of operating
                  or owning a Competitive Business in the Restricted Territory.

         4.2.2    Each of the Covenantors undertake to the Buyer that they will
                  not, and they will procure that no Subsidiary of the
                  Covenantors will, for a period of three years immediately
                  following Closing, solicit or endeavour to solicit away from
                  the Company any person employed by, or who is a consultant to,
                  the Company at Closing.

         4.2.3    The Covenantors acknowledge that each of them has information
                  in respect of the business and financing of the Company and
                  its dealings, transactions, affairs, plans and proposals, all
                  of which information is, or may be, secret or confidential and
                  important to the Company. In this Clause 4, "Confidential
                  Information" means information, other than information
                  referred to in Clause 4.2.4, relating to the Company's
                  finances, prices, business plans, marketing plans, development
                  plans, manpower plans, sales targets, sales statistics,
                  customers lists, customer relationships, suppliers lists,
                  sales statistics, survey reports and market share data. The
                  Covenantors further acknowledge that the disclosure of
                  Confidential Information (whether directly or indirectly) to
                  actual or potential competitors of the Company would place the
                  Company at a competitive disadvantage and would do damage
                  (whether financial or otherwise) to its business. Each of the
                  Covenantors accordingly agrees to enter into the restrictions
                  contained in Clause 4.2.5.

         4.2.4    For the avoidance of doubt nothing contained in this Agreement
                  shall prevent Magellan or any of its Subsidiaries from
                  licensing to third parties for use in jurisdictions other than
                  Switzerland and the United Kingdom an operating system
                  referred to as the "Charter System", which is presently
                  licensed by a Magellan Subsidiary to third parties.

                                      -16-


         4.2.5    Each of the Covenantors undertakes that they will not, and
                  will procure that none of their Affiliates (as used herein
                  "affiliate" or "Affiliate" shall have the meaning ascribed to
                  "Affiliate" in the Charter Medical Agreement) will, at any
                  time during the said three year period after Closing:

                  4.2.5.1  disclose Confidential Information to any person
                           except (i) to their professional advisors or officers
                           or employees and, in each case, whose province it is
                           to know the same, (ii) to those authorised by the
                           Company to know; or (iii) insofar as they are
                           compelled by law or competent authority so to do;

                  4.2.5.2  use Confidential Information for their own purposes
                           or for any purpose other than those of the Company;
                           or

                  4.2.5.3  through any failure to exercise all due care and
                           diligence, cause or permit any unauthorised
                           disclosure of any Confidential Information of the
                           Company;

                  provided that these restrictions on the Covenantors will cease
                  to apply to information which (otherwise than through the
                  default of the Seller or Magellan) becomes available to the
                  public generally.

         4.2.6    The parties agree that each of the undertakings set out in
                  this Clause 4 is separate, severable and enforceable.
                  Accordingly, if any one or more of such undertakings or part
                  of any undertaking is held to be against the public interest
                  or unlawful or in any way an unreasonable restraint of trade,
                  the remaining undertakings or remaining part of the
                  undertakings will continue in full force and effect and will
                  bind the Covenantors.

         4.2.7    Nothing in this Clause 4 shall prevent Magellan or its
                  affiliates from acquiring the whole or any part of a body
                  corporate or business or any direct or indirect interest in
                  the whole or any part of a body corporate or business, the
                  acquisition, holding or carrying on of which would otherwise
                  amount to a breach of this Clause 4, except where more than
                  10% of the turnover of the business of the body corporate or
                  business directly or indirectly acquired in the 12 months
                  prior to such acquisition consists of any of the Competitive
                  Business referred to in Clause 4.2.1, in which case Magellan
                  or its affiliates shall use reasonable efforts to dispose of
                  that part of the business which, but for this provision, would
                  cause it to be a breach of this Clause 4 as soon as reasonably
                  practicable.

4.3      Tax

         The following provisions shall govern the allocation of responsibility
         between the Buyer and the Seller for certain tax matters following the
         Closing Date:

         (a)      The Seller shall prepare or cause to be prepared and file or
                  cause to be filed all tax returns for the Company for all
                  periods ending on or prior to the Closing Date, 

                  -17-


                  including tax returns which are required to be filed after the
                  Closing Date. Such tax returns shall be prepared in accordance
                  with the Company's past custom and practice. In preparing the
                  Company's tax returns, the Seller shall consult with the Buyer
                  in good faith and shall provide the Buyer with drafts of such
                  tax returns (together with the relevant back-up information)
                  for review at least ten days prior to filing. After the
                  Closing, the Buyer shall not prepare or cause to be prepared
                  to file or cause to be filed any tax return for the Company
                  for any period ending on or prior to the Closing Date without
                  the prior written consent of the Seller.

         (b)      The Buyer shall prepare or cause to be prepared and file or
                  cause to be filed any tax returns of the Company for the tax
                  periods which end after the Closing Date, including tax
                  returns for the tax periods that begin before the Closing
                  Date. Such tax returns shall be prepared in accordance with
                  the Company's past custom and practice. In preparing such tax
                  returns, the Buyer shall consult with the Seller in good faith
                  and shall provide the Seller with drafts of such tax returns
                  (together with the relevant back-up information) for review at
                  least ten days prior to filing.

         (c)      The Buyer and the Seller shall co-operate fully, as and to the
                  extent reasonably requested by the other party, in connection
                  with the filing of tax returns pursuant to this Clause 4.3 and
                  any audit, litigation, or other proceeding with respect to
                  taxes. Such co-operation shall include the retention and (upon
                  the other party's request) the provision of records and
                  information which are reasonably relevant to any such audit,
                  litigation, or other proceeding and making employees available
                  on a mutually convenient basis to provide additional
                  information and explanation of any material provided
                  hereunder. The Buyer and the Seller agree (A) to retain all
                  books and records with respect to tax matters pertinent to the
                  Company relating to any taxable period beginning before the
                  Closing Date until the expiration of the statute of
                  limitations (and, to the extent notified by the Buyer or the
                  Seller, any extensions thereof) of the respective taxable
                  periods, and to abide by all record retention agreements
                  entered into with any taxing authority, and (B) to give the
                  other party reasonable written notice prior to transferring,
                  destroying or discarding any such books and records and, if
                  the other party so requests, the Buyer or the Seller, as the
                  case may be, shall allow the other party to take possession of
                  such books and records to the extent they would otherwise be
                  destroyed or discarded.

         (d)      the Buyer and the Seller further agree, upon request to use
                  commercially reasonable efforts to obtain any certificate or
                  other document from any governmental authority or any other
                  such person as may be necessary to mitigate, reduce or
                  eliminate any tax that could be imposed (including taxes with
                  respect to the transactions contemplated hereby).

         (e)      All tax sharing agreements or similar agreements with respect
                  to or involving the Company shall be terminated as of the
                  Closing Date and, after the Closing Date, the Company shall
                  not be bound thereby or have any liability thereunder.

                                      -18-


         (f)      All taxes relating to any period prior to 31 March 1999shall
                  be paid by the Seller. With respect to any such taxes which
                  have not been paid prior to31 March 1999, the Company has made
                  a full accrual in respect of them in the Closing Accounts. The
                  Seller undertakes to hold the Buyer harmless and indemnify it
                  from and against any taxes payable with respect to any period
                  prior to 30 September, 1998 to the extent to which such taxes
                  have not been paid or full provision has not been made for
                  them in the 1998 Financial Statements.

         (g)      If in respect of or in connection with any breach of any of
                  the warranties or any facts or matters warranted not being
                  true any amount payable to the Buyer by the Seller (or by
                  Magellan under the guarantee set out in Clause 6 is subject to
                  taxation, such amounts shall be increased to such extent as
                  may be necessary to procure that the net amount received by
                  the Buyer is equal to the full amount payable to the Buyer
                  under this Agreement.

5.       Indemnification

5.1      Indemnification of the Buyer

         5.1.1    Subject to the limitations set forth in this Agreement, the
                  Seller hereby agrees to indemnify and hold harmless the Buyer
                  from and against any losses, damages, liabilities,
                  obligations, claims, judgements, costs and expenses including,
                  without limitation, reasonable attorneys' fees properly
                  incurred by the Buyer by reason, or resulting from a breach of
                  the Seller's representations and warranties or covenants
                  hereof.

         5.1.2    In addition, the Seller covenants with the Buyer that it will
                  pay to the Buyer an amount equal to the amount necessary to
                  indemnify the Buyer and the Company from and against all
                  actions, proceedings, claims, demands and reasonable costs and
                  expenses which may be suffered or incurred by the Buyer or the
                  Company arising out of or in respect of any claims, legal
                  action, proceedings, suit, litigation, prosecution,
                  investigation, enquiry or arbitration involving the Company
                  and relating to claims made by Mr Buss, Mr Dubuis, Mrs Rime
                  and Mrs Sharifi (Exhibit J).

5.2      Limitations on Liability of Seller

         The parties agree that Article 201 of the Swiss Code of Obligations is
         not applicable to any claim arising out of or in connection with this
         Agreement.

         (i)      The aggregate liability of the Seller in respect of all claims
                  ("Relevant Claims") for damages, for breach of the
                  representations and warranties in this Agreement other than
                  those set out in Clause 4.3(f) and 5.1.2 together with all
                  Relevant Claims (as defined in the Charter Medical Agreement)
                  shall not exceed the aggregate amount of the consideration
                  payable in respect of the sale of the Shares pursuant to this
                  Agreement, the sale of the Shares (as defined in the Charter

                                      -19-


                  Medical Agreement) pursuant to the Charter Medical Agreement
                  and the Sale of the Charter St Louis Property (as defined in
                  the Charter Medical Agreement) as set forth in Clause 3.1 of
                  the Charter Medical Agreement.

         (ii)     The Seller will be under no liability to make any payment in
                  respect of any liability pursuant to a Relevant Claim unless
                  and to the extent the amount of its liability in respect of
                  any such Relevant Claim is, when aggregated with the Seller's
                  liability in respect of any other Relevant Claim, Relevant
                  Claims (as defined in the Charter Medical Agreement) and
                  claims in respect of the breach of any warranty in the Charter
                  Medical Agreement assigned to the purchaser of the Charter St
                  Louis Property or which would have been made but for the
                  provisions of this Clause 5.2(ii), in excess of US$500,000.

         (iii)    The Seller will be under no liability in respect of any
                  Relevant Claim, where the amounts for which the Seller would
                  be liable under such Relevant Claim is less than US$45,000 and
                  the amount of such Relevant Claim shall be disregarded for the
                  purposes of aggregation of Relevant Claims pursuant to Clause
                  5.2(ii) provided that, for the purposes of this Clause
                  5.2(iii), any Relevant Claims arising out of the same event,
                  act, default or omission or any sequence of related events,
                  acts, defaults or omissions shall be aggregated together.

         (iv)     The limitations contained in this Clause 5.2 shall not apply
                  in case of fraud or gross negligence by the Seller.

         (v)      The Buyer agrees with the Seller that it shall not be entitled
                  to recover damages or obtain payment, reimbursement,
                  restitution or indemnity more than once in respect of any one
                  shortfall, damage, deficiency, breach or other set of
                  circumstances which give rise to one or more Relevant Claim.

         (vi)     The Seller shall not be liable in respect of a Relevant Claim
                  unless written notice containing, so far as reasonably
                  practicable, details of the Relevant Claim is served on the
                  Seller:

                  (a)      in respect of any Relevant Claim relating to a breach
                           of the warranties set out in Clause 3 other than
                           those referred to in Sub-clauses (ii) and (iii) of
                           this Clause on or before the date which is 2 years
                           after Closing; or

                  (b)      in respect of any Relevant Claim relating to a breach
                           of the warranties set out in Clause 3.1.22
                           (Environmental matters) on or before the tenth
                           anniversary of the Closing Date; or

                  (c)      in respect of a claim under Clause 4.3(f), on or
                           before the date being five years and one month from
                           30 September 1998;

         (vii)    The Seller shall not be liable in respect of a Relevant Claim:

                                      -20-


                  (a)      which would not have arisen but for an act, omission
                           or transaction carried out after the date of the
                           Agreement by the Buyer or the Company, their
                           respective directors, employees or agents or
                           successors in title;

                  (b)      to the extent that it relates to any loss which is
                           recovered under any policy of insurance effected by
                           or for the Company, the Buyer agrees that it will,
                           and will cause the Company to, use its best efforts
                           to successfully claim under such policy; provided
                           always that the Buyer shall not be prejudiced or
                           prohibited from bringing any claim against the Seller
                           under the terms of Clause 3 if recovery has not been
                           successfully made or is still being pursued within 30
                           days prior to the expiration of the relevant periods
                           provided for within Clause 5.2. In the event that the
                           claim is successfully made against the Seller, then
                           the Buyer shall or shall cause the Company to
                           continue to seek recovery as aforesaid and in the
                           event of any subsequent recovery under any such
                           policy of insurance, the Buyer shall reimburse the
                           Seller with the amounts recovered under such policy
                           (after deduction of all proper costs and expenses
                           (not otherwise reimbursed) incurred by the Buyer or
                           the Company in relation to such recovery), up to the
                           amount previously received from the Seller,;

                  (c)      to the extent that allowance, provision or reserve
                           has been made for such fact, matter, event or
                           circumstance in the 1998 Financial Statements or the
                           Closing Accounts or to the extent that payment or
                           discharge of the relevant matter has been taken into
                           account therein or to the extent that such matter was
                           specifically referred to in the notes to the 1998
                           Financial Statements or the Closing Accounts; or

                  (d)      to the extent that such Relevant Claim is
                           attributable to, or such Relevant Claim is increased
                           as a result of, any legislation not in force at the
                           date hereof or to any change of law, regulation,
                           directive, requirement or administrative practice or
                           any change in rates of tax, which in each case is not
                           in force at the date hereof.

         (viii)   If the Seller pays to the Buyer or the Company an amount in
                  respect of any Relevant Claim or a claim under Clause 4.3(f)
                  or 5.1.2 and the Buyer or the Company subsequently recovers a
                  sum or credit which is referable to that Relevant Claim or
                  claims under Clause 4.3(f) or 5.1.2 the Buyer shall (or, as
                  the case may be, shall procure that the Company shall)
                  promptly repay to the Seller an amount equal to the lesser of
                  (i) the amount or value of such benefit recovered less any
                  reasonable costs, fees and expenses incurred by the Company or
                  the Buyer in connection with the recovery (and not otherwise
                  reimbursed) or (ii) the total amount paid by the Seller in
                  respect of that Relevant Claim.

         (ix)     Any payment made by the Seller in respect of any Relevant
                  Claim or a claim under Clause 4.3(f) or 5.1.2 shall be deemed
                  a reduction in the consideration paid by Buyer hereunder.

                                      -21-


         (x)      Upon any Relevant Claim being made, or notification from the
                  Buyer to the Seller pursuant to this article of any third
                  party claim, potential claim, matter or event which might lead
                  to a Relevant Claim being made, the Buyer shall, and shall
                  co-operate to cause the Company to:

                  (a)      make available to accountants and other professional
                           advisers appointed by the Seller such access to the
                           personnel of the Company and to any relevant records
                           and information as the Seller reasonably requests in
                           connection with such Relevant Claim or third party
                           claim, potential claim, matter or event; and

                  (b)      use best efforts to cause the auditors (both past and
                           then current) of the Company to make available their
                           audit working papers in respect of audits of the
                           Company's accounts for any relevant accounting period
                           in connection with such Relevant Claim, matter or
                           event. Such access shall be required only at
                           reasonable times and on reasonable notice.

         (xi)     If the Buyer becomes aware of any third party claim, potential
                  claim, matter or event hereafter (a "third party claim") which
                  might lead to a Relevant Claim or a claim under 4.3(f) or
                  5.1.2 being made, the Buyer:

                  (a)      shall cause notice of such third party claim to be
                           given promptly to the Seller;

                  (b)      shall not make (or, as appropriate, shall co-operate
                           to ensure that the Company shall not make) any
                           admission of liability, agreement or compromise with
                           any person, body or authority in relation to any such
                           third party claim UNTIL THE EXPIRATION OF TEN
                           BUSINESS DAYS ("NOTICE PERIOD") FROM THE DATE OF
                           SERVICE ON THE SELLER OF THE NOTICE REFERRED TO IN
                           CLAUSE 5.2(XI)(A). The Buyer shall not take any
                           action specified in the prior sentence if so
                           instructed by the Seller in writing during the Notice
                           Period (subject to it being indemnified to its
                           reasonable satisfaction against all reasonable out of
                           pocket expenses incurred by it or the Company;

                  (c)      (subject to it being fully indemnified to its
                           reasonable satisfaction by the Seller against all
                           reasonable out of pocket expenses incurred by it or
                           the Company) shall take (or, as appropriate, shall
                           co-operate to cause the Company to take) such action
                           as the Seller may reasonably request in writing to
                           avoid, dispute, resist, appeal, compromise or defend
                           such third party claim or any adjudication in respect
                           of that third party claim; and

                  (d)      (subject to it being indemnified to its reasonable
                           satisfaction against all reasonable out of pocket
                           expenses incurred by it or the Company) if so
                           required by the Seller in writing, shall ensure (or,
                           as appropriate, shall co-operate to cause the Company
                           to ensure), at the request in writing of 

                                      -22-


                           the Seller, that the Seller is placed in a position
                           to take on or take over the conduct of all
                           proceedings and/or negotiations of whatsoever nature
                           arising in connection with the third party claim in
                           question and provide (or, as appropriate, co-operate
                           to cause the Company to provide) such information and
                           assistance as the Seller may reasonably require in
                           connection with the preparation for and conduct of
                           such proceedings and/or negotiations.

         (xii)    A breach of any representation or warranty contained in Clause
                  3 which is capable of remedy shall not entitle the Buyer to
                  compensation except to the extent that:

                  (a)      the Seller is given written notice of such breach;
                           and

                  (b)      such breach is not remedied within 30 days after the
                           date on which such notice is served on the Seller.

         (xiii)   The Seller shall not be liable to satisfy any Relevant Claim
                  which shall be made after the Company shall cease to be a
                  subsidiary company of the Buyer or any holding company or
                  subsidiary of the Buyer or any subsidiary of a holding company
                  of the Buyer ("Buyer Affiliate").

         (xiv)    Where the Company or the Buyer is entitled to recover from
                  some other person any sum in respect of any liability, loss or
                  damage which is the subject of a Relevant Claim against the
                  Seller or for which such a Relevant Claim could be made (and
                  whether before or after the Seller has made payment
                  hereunder), the Buyer shall (or, shall ensure that the Company
                  shall):

                  (a)      promptly notify the Seller and provide such
                           information as the Seller may reasonably require
                           relating to such liability or dispute and the steps
                           taken or to be taken by the Buyer or the Company in
                           connection with it;

                  (b)      if so required by the Seller (subject to the Buyer
                           being fully indemnified to its reasonable
                           satisfaction by the Seller against all reasonable out
                           of pocket costs and expenses incurred by the Buyer or
                           the Company) and before seeking to recover any amount
                           from the Seller under this Agreement, first take all
                           steps (whether by way of a claim against its insurers
                           or otherwise, including but without limitation
                           proceedings) as the Seller may reasonably require to
                           enforce such recovery; and

                  (c)      keep the Seller informed of the progress of any
                           action taken and thereafter any claim against the
                           Seller shall be limited (in addition to the
                           limitations on the liability of the Seller referred
                           to in this Agreement) to the amount by which the loss
                           or damage suffered by the Buyer as a result of such
                           breach shall exceed the amount so recovered.

                                      -23-


         (xv)     Without limiting the rights of the Buyer or its ability to
                  claim damages on any other basis under this Agreement, if any
                  of the warranties set out in Clause 3.1.22 is untrue by reason
                  of the Company having committed a breach or non-observance of
                  any environmental laws, the Seller shall pay to the Buyer an
                  amount equal to all liabilities incurred by the Company as a
                  consequence of the breach of such environmental laws
                  including, without limitation, the cost of all reasonable and
                  appropriate remedial works required to be carried out at the
                  relevant property to procure compliance with such
                  environmental laws; provided any damage claim provided in this
                  Clause (xv) shall be deemed a Relevant Claim for all purposes
                  including for purposes of Clause 5.2.

5.4      Currency Conversion

         For the purposes of this Agreement, where any sum, or in particular but
         without limitation, any liability under the representations and
         warranties, is expressed to be in any currency other than US dollars,
         such sum shall be converted into US dollars at the Market Rate. "Market
         Rate" means the mid market rate for the relevant currency at 4.00 pm on
         the weekday (other than a Saturday) when banks are open for a full
         range of banking transactions in Switzerland ("Business Day") preceding
         the date upon which either such sum is due and payable, or where such
         sum relates to a claim under this Agreement, the Business Day preceding
         the date upon which notice of such claim is served by the Buyer upon
         the Seller in accordance with the provisions of Clause 5.2., as
         evidenced by a list of currencies provided by the Union Bank of
         Switzerland.

5.5      Indemnification of the Seller

         The Buyer hereby agrees to indemnify and hold harmless the Seller from
         and against any losses, damages, liabilities, obligations, claims,
         judgments, costs and expenses, including without limitation, reasonable
         attorneys' fees incurred by Seller by reason or resulting from a breach
         of the Buyer's representations and warranties or covenants herein.

6.       Guarantee and Indemnity by Magellan

6.1      Magellan hereby unconditionally and irrevocably guarantees to the Buyer
         the due and punctual performance and observance by the Seller of all
         its obligations under or pursuant to this Agreement arising after
         Closing (the "Magellan Guaranteed Obligations") and agrees to indemnify
         the Buyer against all loss, damage, costs and expenses which the Buyer
         may suffer through or arising from any breach by the Seller of its
         obligations under or pursuant to this Agreement. The liability of
         Magellan under this Agreement shall not be released or diminished by
         any variation of the terms of this Agreement (agreed by Magellan), any
         forbearance, neglect or delay in seeking performance of the obligations
         imposed under this Agreement or any granting of time for such
         performance.

6.2      If and whenever the Seller defaults for any reason whatsoever in the
         performance of any of the Magellan Guaranteed Obligations, Magellan
         shall upon demand unconditionally perform (or procure performance of)
         and satisfy (or procure the satisfaction of) the 

                                      -24-


         obligation or liability in relation to which such default has been made
         in the manner prescribed by this Agreement and so that the same
         benefits shall be conferred on the Buyer as it would have received if
         such obligation or liability had been duly performed and satisfied by
         the Seller.

6.3      The guarantee set out in this Clause 6 is to be a continuing guarantee
         and accordingly is to remain in force until all or any of the
         obligations of the Seller arising after Closing, shall have been
         performed or satisfied. This guarantee is in addition to and without
         prejudice to and not in substitution for any rights or security which
         the Buyer may now or hereafter have or hold for the performance and
         observance of the obligations, commitments, undertakings and warranties
         of the Seller under or in connection with this Agreement or any other
         agreement pursuant to this Agreement.

6.4      As a separate and independent stipulation Magellan agrees that any of
         the Magellan Guaranteed Obligations (including, without limitation, any
         moneys expressed to be payable under this Agreement which may not be
         enforceable against or recoverable from the Seller by reason of any
         legal limitation, disability or incapacity on the Seller or any other
         fact or circumstance (other than any limitation imposed by this
         Agreement) shall nevertheless be enforceable against and recoverable
         from Magellan as though the same had been incurred by Magellan and
         Magellan was the sole or principal obligor in respect thereof.

7.       Guarantee and Indemnity by Bure

7.1      Bure hereby unconditionally and irrevocably guarantees to the Seller
         the due and punctual performance and observance by the Buyer of all its
         obligations under or pursuant to clauses 1.1 (sale of shares), 2.3(b)
         (payment of Consideration) and 3.2 (Buyer's warranties) (such
         provisions being referred to in this clause as the "Guaranteed
         Obligations") and agrees to indemnify the Seller against all loss,
         damage, costs and expenses which the Seller may suffer through or
         arising from any breach by the Buyer of its obligations under or
         pursuant to the Guaranteed Obligations. The liability of Bure under
         this Agreement shall not be released or diminished by any variation of
         the terms of this Agreement (if agreed to by Bure), any forbearance,
         neglect or delay in seeking performance of the obligations imposed
         under this Agreement or any granting of time for such performance.

7.2      If and whenever the Buyer defaults for any reason whatsoever in the
         performance of any of the Guaranteed Obligations, Bure shall upon
         demand unconditionally perform (or procure performance of) and satisfy
         (or procure the satisfaction of) the obligation or liability in regard
         to which such default has been made in the manner prescribed by this
         Agreement and so that the same benefits shall be conferred on the
         Seller as it would have received if such obligation or liability had
         been duly performed and satisfied by the Buyer.

7.3      The guarantee set out in this Clause 7 is to be a continuing guarantee
         and accordingly is to remain in force until all of the Guaranteed
         Obligations shall have been performed or 

                                      -25-


         satisfied. This guarantee is in addition to and without prejudice to
         and not in substitution for any rights or security which the Seller may
         now or hereafter have or hold for the performance and observance of the
         obligations, commitments, undertakings and warranties of the Buyer
         under or in connection with this Agreement or any other agreement
         entered into pursuant to this Agreement.

7.4      As a separate and independent stipulation, Bure agrees that any of the
         Guaranteed Obligations (including, without limitation, any moneys
         expressed to be payable under this Agreement which may not be
         enforceable against or recoverable from the Buyer by reason of any
         legal limitation, disability or incapacity of the Buyer or any other
         fact or circumstance (other than any limitation imposed by this
         Agreement) shall nevertheless be enforceable against and recoverable
         from Bure as though the same had been incurred by Bure and Bure were
         the sole or principal obligor in respect thereof.

8.       Assignment

          No party may assign all or any of its rights, obligations or causes of
         action arising under or pursuant to this Agreement without the prior
         written consent of the other party; provided that nothing herein shall
         prevent the Buyer from (i) charging or assigning all of such rights,
         obligations or causes of action to an affiliate of the Buyer provided
         and for so long as it remains an affiliate and provided further that
         the Buyer shall cause its affiliates to comply fully and timeously with
         all the Buyer's duties and obligations under this Agreement, (ii)
         charging or assigning such rights obligations or causes of action
         pursuant to the tax covenant or warranties. In the event that any
         affiliate of the Buyer ceases to be such and has had assigned to it all
         rights under this Agreement, such affiliate shall reassign such rights
         other than rights pursuant to the tax covenant or warranties (which for
         the avoidance of doubt may be so reassigned) to the Buyer or another
         affiliate of the Buyer. This Agreement will be binding on and will
         continue for the benefit of the parties and their respective successors
         and assigns. Accordingly references in this Agreement (or any document
         entered into pursuant to this Agreement) to the relevant party shall,
         following any such assignment and unless the context otherwise
         requires, mean the assignee or assignees for the time being.

         The Seller and Magellan agree further that, upon the request of the
         Buyer or its successors in title or assigns, this Agreement may be
         novated (in respect of the tax covenant or warranties) in favour of the
         beneficial owner for the time being of the whole or part of the Shares
         and the Seller and Magellan shall execute such a novation agreement in
         such form as the Buyer may reasonably require. If the Seller or
         Magellan fails to execute any such novation agreement within 20
         business days of a request by the Buyer to do so, the Buyer may execute
         it on behalf of the Seller or Magellan (as the case may be) or both of
         them and for such purpose each of the Seller and Magellan hereby
         irrevocably appoints the Buyer as their attorney for the purpose of
         executing any such Agreement. The Seller and Magellan agree to ratify
         and confirm any action taken by the Buyer by virtue of this power of
         attorney.

9.       Miscellaneous

                                      -26-


9.1.     Announcement; confidentiality

         (a)      Information of the employees

                  The transactions contemplated by this Agreement shall be
                  announced by the Company to its employees prior to or
                  simultaneously with any press release or public announcement
                  in a form to be agreed upon by the parties.

         (b)      Press release

                  No press release or public announcement of the transactions
                  contemplated by this Agreement shall be made by or on behalf
                  of one party without the prior approval of the other party.

         (c)      Confidentiality

                  The parties agree to keep the terms of this Agreement and any
                  information acquired during the course of the negotiations
                  having led to this Agreement strictly confidential until
                  Closing.

9.2.     Costs

         Each of the parties shall pay its own legal and accountancy costs,
         charges and expenses connected with the negotiation, preparation and
         implementation of this Agreement.

9.3.     Amendment; waiver

         Any amendment to this Agreement shall be made in writing. No waiver by
         any party of any of the provision hereof shall be effective unless
         explicitly set forth in writing and executed by the party so waiving.
         Except as provided in the preceding sentence, no action taken pursuant
         to this Agreement shall be deemed to constitute a waiver. The waiver,
         by any party hereto, of a breach of any provision of this Agreement
         shall not operate or be construed as a waiver of any other or
         subsequent breach or a waiver of any other provision of this Agreement.

9.4.     General

         9.4.1    Failure or delay by any party in exercising any right or
                  remedy under this Agreement will not in any circumstances
                  operate as a waiver of it, nor will any single or partial
                  exercise of any right or remedy in any circumstances preclude
                  any other or further exercise of it or the exercise of any
                  such right or remedy.

         9.4.2    The Buyer may release or compromise the liability of or grant
                  time or any other indulgence to, any person who is a party to
                  this Agreement without in any way prejudicing or affecting the
                  liability of any person in respect of any other liability or
                  obligation hereunder.

                                      -27-


         9.4.3    Except insofar as the same have been fully performed at
                  Closing, each of the agreements, covenants, obligations,
                  warranties, indemnities and undertakings contained in the
                  Agreement will continue in full force and effect
                  notwithstanding Closing.

         9.4.4    No variation of the Agreement or any other documents to be
                  entered into pursuant to the Agreement shall be effective
                  unless it is in writing and signed by or on behalf of each of
                  the parties.

9.5.     Post Closing Undertakings

         9.5.1    Following Closing, the Buyer undertakes to the Seller and
                  Magellan that:

                  (a)      it will use all reasonable endeavours to obtain the
                           release of the Seller, Magellan, any holding company
                           or subsidiary of the Seller or any subsidiary of a
                           holding company of the Seller and any Magellan
                           Affiliate from any guarantees, indemnities, cross
                           indemnities and letters of comfort given to any third
                           party by Magellan and any Magellan Affiliate in
                           respect of the liabilities of the Company which are
                           in force at the date of this Agreement ("Intra-Group
                           Guarantees") to which any of them are party and,
                           pending such release, to indemnify Magellan and any
                           Magellan Affiliates against all amounts paid by any
                           of them to any third party pursuant to any
                           Intra-Group Guarantees in respect of any liability of
                           the Company (and all costs incurred in connection
                           with such liability) whether arising before or after
                           Closing; and

                  (b)      save with the prior written consent of Magellan,
                           neither the Buyer nor the Company will use the name
                           "Magellan" or any similar name or names likely to be
                           confused with them.

9.6      Further Assurance

         At any time, each of the parties hereto shall (at its own cost and
         expense) do and execute or procure to be done and executed all
         necessary acts, documents and things in a form reasonably satisfactory
         to the other party reasonably requested of them by the other party to
         give effect to this Agreement and the transactions contemplated in or
         by it securing to such other party the full benefit of the rights,
         powers and remedies conferred upon such other party in this Agreement.

9.7      Invalidity

         Each of the provisions of this Agreement is severable. If any provision
         in this Agreement is held to be illegal, invalid or unenforceable, in
         whole or in part under any enactment or rule of law, such provision or
         part shall to that extent be deemed not to form part of this Agreement,
         but the legality and enforceability of the remainder of this Agreement
         shall not be affected.

                                      -28-


9.8      Entire Agreement

         9.8.1    This Agreement sets out the entire agreement and understanding
                  between the parties in respect of the sale and purchase of the
                  Sale Shares. It is agreed that:-

                  (a)      no party has entered into this Agreement in reliance
                           upon any representation, warranty or undertaking of
                           any other party which is not expressly set out or
                           referred to in this Agreement;

                  (b)      no party shall have any remedy in respect of
                           misrepresentation or untrue statement made by any
                           other party unless and to the extent that a claim
                           lies for breach of warranty under this Agreement; and

                  (c)      this Clause shall not exclude any liability for
                           fraudulent misrepresentation.

9.9.     Counterparts

         The Agreement may be entered into in any number of counterparts, all of
         which taken together shall constitute one and the same instrument. Any
         party may enter into this Agreement by signing any such counterpart.

9.10     Interest

         If any party defaults in the payment when due of any sum payable under
         this Agreement (however determined), the liability of such party shall
         be increased to include interest on such sum from the date when such
         payment is due until the date of actual payment (as well after as
         before judgment) at a rate per annum of 2 percent above the base rate
         from time to time of Royal Bank of Scotland Plc.
         Such interest shall accrue from day to day.

9.11     Notices

         9.11.1   Any notice, claim or demand to be given in connection with or
                  under this Agreement shall be in writing and signed by or on
                  behalf of the party giving it.

         9.11.2   A notice may be served by letter; each letter containing such
                  notice shall be left or sent by pre-paid recorded delivery or
                  registered post to:

                  (a)      in the case of the Seller, the Seller's solicitors
                           Bourgeois Muller Pidoux & Associes, Montbenon 2, 1003
                           Lausanne, Switzerland ( the "Seller's Solicitors"),
                           marked for the attention of Oliver Bourgeois and
                           copied to Magellan, marked for the attention of
                           Magellan's General Counsel, sent to the addresses
                           indicated for the Seller and the Seller's Solicitors
                           above; and

                  (b)      in the case of the Buyer, at the address stated at
                           the beginning of this Agreement or at such address as
                           may from time to time be notified in writing in
                           accordance with this Clause.

                                      -29-


         9.11.3   A notice shall be deemed to have been served in accordance
                  with the provisions contained in Clause 9.11.2.

         9.11.4   Any demand, notice or other communication and any service of
                  process relating to any proceeding, suit or action arising out
                  of or in connection with this Agreement, will be validly given
                  or made to the Seller if given or made to Bourgeois Muller
                  Pidoux & Associes, Attention Oliver Bourgeois Montbenon 2.
                  1003 Lausanne, Switzerland and copied to Magellan as referred
                  to in Clause 9.11.2. Notice shall be deemed to have been
                  served:

                  (a)      if sent by post (unless the contrary is proved)
                           forty-eight hours from the time of posting;

                  (b)      if delivered by hand at the address referred to in
                           Clause 9.11.2, at the time of delivery; and

                  (c)      in proving such service it shall be sufficient to
                           prove that the notice was properly addressed and was
                           posted in accordance with Clause 9.11.2 or show
                           delivery was made by hand.

                  If a notice would have been delivered outside of normal
                  business hours (being 9:30 a.m to 5:30 p.m. on a Business Day
                  under the preceding provisions of this Clause, it shall be
                  deemed to have been delivered or given at 9:30 a.m. on the
                  next Business Day.

9.12     Remedy, Applicable Law and Jurisdiction

9.12.1   The Seller and Buyer acknowledge and agree in relation to clause 2.2
         time is of the essence. The Seller and Buyer also agree that in the
         event of either party failing to fulfil its obligations to effect all
         necessary steps to close the transaction on the date and in the manner
         provided in this Agreement the appropriate remedy in addition to all
         other remedies available (at law or equity) will be for the other party
         to apply for a decree of specific performance of this Agreement and in
         view of the integral relationship between this Agreement and the
         Charter Medical Agreement such application will be made in the
         exclusive jurisdiction of the English Courts and such applications will
         be governed by English law and this Agreement will be construed for all
         purposes on an application for specific performance as governed by and
         interpreted in accordance with English law

9.12.2   Restricted Remedy

         Subject to clause 9.12.1 above - The sole and exclusive remedy of any
         party for any misrepresentation or any breach of a warranty or covenant
         set forth in or made pursuant to this Agreement shall be a claim for
         indemnification under and pursuant to this article 5, provided however
         that the Buyer may in addition to any remedy hereunder rescind this
         Agreement in case of a breach of any of the warranties set forth in
         CLAUSE 3.1.11.

9.12.3   Application Law - Arbitration

                                      -30-


         Subject to clause 9.12.1 above - This Agreement shall be governed by
and interpreted in accordance with Swiss law. Subject to Clause 9.12.1 above,
any dispute concerning this Agreement, will be finally settled by arbitration,
under the Rules of Arbitration of the International Chamber of Commerce by one
or more arbitrators appointed in accordance with the said Rules. The seat of
arbitration will be in Geneva, Switzerland, and the language of the arbitration
proceedings, including arguments and briefs, shall be English.

                                      -31-


IN WITNESS WHEREOF, the parties hereto have executed this Agreement in ...
originals as of the date first above written.


CHARTER MEDICAL
INTERNATIONAL, S.A., INC.



By :
    ------------------


MAGELLAN HEALTH SERVICES, INC.,



By: 
    ------------------

CMEL HOLDING AB



By: 
    ------------------


INVESTMENT AB BURE



By: 
    ------------------

                                      -32-