Execution Copy

             STOCK OPTION AND TRIGGER PAYMENT AGREEMENT (the "Agreement"),
   dated November 13, 1996, between OSB Financial Corp., a Wisconsin
   corporation ("Issuer"), and FCB Financial Corp., a Wisconsin corporation
   ("Grantee").


                              W I T N E S S E T H:


             WHEREAS, Grantee and Issuer have entered into an Agreement and
   Plan of Merger of even date herewith (the "Merger Agreement"), which
   agreement has been executed by the parties hereto immediately prior to
   this Stock Option and Trigger Agreement; and

             WHEREAS, as a condition to Grantee's entering into the Merger
   Agreement and in consideration therefor, Issuer has agreed to grant
   Grantee the Option (as hereinafter defined).

             NOW, THEREFORE, in consideration of the foregoing and the mutual
   covenants and agreements set forth herein and in the Merger Agreement, the
   parties hereto agree as follows:

        1.   (a)  Issuer hereby grants to Grantee an unconditional,
   irrevocable option (the "Option") to purchase, subject to the terms
   hereof, up to 230,866 fully paid and nonassessable (except as otherwise
   provided by Section 180.0622(2)(b) of the Wisconsin Business Corporation
   Law) shares (the "Option Shares") of Issuer's Common Stock, par value
   $0.01 per share ("Issuer Common Stock"), at a price of $24.375 per share
   (the "Option Price"); provided, however, that in no event shall the number
   of shares of Issuer Common Stock for which this Option is exercisable
   exceed 19.9% of the issued and outstanding shares of Issuer Common Stock
   without giving effect to any shares subject to or issued pursuant to the
   Option.  The number of shares of Issuer Common Stock that may be received
   upon the exercise of the Option and the Option Price are subject to
   adjustment as herein set forth.

             (b)  In the event that any additional shares of Issuer Common
   Stock are either (i) issued or otherwise become outstanding after the date
   of this Agreement (other than pursuant to this Agreement) or (ii)
   redeemed, repurchased, retired or otherwise cease to be outstanding after
   the date of this Agreement (such event a "Change in Shares Outstanding
   Event"), the number of shares of Issuer Common Stock subject to the Option
   shall be increased or decreased, as appropriate, so that, after such
   Change in Shares Outstanding Event, such number equals 19.9% of the number
   of shares of Issuer Common Stock then issued and outstanding without
   giving effect to any shares subject or issued pursuant to the Option. 
   Nothing contained in this Section 1(b) or elsewhere in this Agreement
   shall be deemed to authorize Issuer to issue or redeem, repurchase, or
   retire shares of Issuer Common Stock or to authorize either the Issuer or
   the Grantee otherwise to breach any provision of the Merger Agreement.

             (c)  The Option Price shall be payable, at the option of the
   Grantee, as follows:

                  (i)  in cash, or

                  (ii) subject to the receipt of all approvals of any
   Governmental Entity required for the Issuer to acquire, and Grantee to
   issue, the Grantee Shares (as defined below) from Grantee, in shares of
   common stock, $0.01 par value, of Grantee ("Grantee Shares"),

   in either case in accordance with Section 4 hereof.

             (d)  As used in this Agreement, the "Fair Market Value" of any
   share shall be the average of the last sales price for such share on The
   Nasdaq Stock Market during the ten trading days prior to the fifth trading
   day preceding the date such Fair Market Value is to be determined.

        2.   (a)  The Option may be exercised by Grantee, in whole or in
   part, at any time or from time to time after the Merger Agreement becomes
   terminable by Grantee under circumstances which could entitle Grantee to a
   termination fee (as opposed to the reimbursement of expenses only) under
   Section 8.3(a) of the Merger Agreement or Section 8.3(b) of the Merger
   Agreement (regardless of whether the Merger Agreement is actually
   terminated), any such event by which the Merger Agreement becomes so
   terminable by Grantee being referred to herein as a " Trigger Event."

             (b)  (i)  Issuer shall notify Grantee promptly in writing of the
   occurrence of any Trigger Event, it being understood that the giving of
   such notice by Issuer shall not be a condition to the right of Grantee to
   exercise the Option.

                  (ii) In the event Grantee wishes to exercise the Option,
   Grantee shall deliver to Issuer written notice (an "Exercise Notice")
   specifying the total number of Option Shares it wishes to purchase.

                  (iii)     Upon the giving by Grantee of Issuer of the
   Exercise Notice and the tender of the applicable aggregate Option Price,
   Grantee, to the extent permitted by law and Issuer's organizational
   documents, and provided that the conditions to Issuer's obligation to
   issue Option Shares to Grantee hereunder set forth in Section 3 have been
   satisfied or waived, shall be deemed to be the holder of record of the
   Option Shares issuable upon such exercise, notwithstanding that the stock
   transfer books of Issuer shall then be closed or that certificates
   representing such Option Shares shall not then be actually delivered to
   Grantee.

                  (iv) Each closing of a purchase of Option Shares (a
   "Closing") shall occur at a place, on a date, and at a time designated by
   Grantee in an Exercise Notice delivered at least two business days prior
   to the date of the Closing.

             (c)  The Option shall terminate upon the earliest to occur of:

                  (i)  the Effective Time of the Merger;

                  (ii) the termination of the Merger Agreement pursuant to
   Section 8.1 thereof, other than under circumstances which also constitute
   a Trigger Event under this Agreement;

                  (iii)     180 days following any termination of the Merger
   Agreement upon or during the continuance of a Trigger Event (or if, at the
   expiration of such 180-day period, the Option cannot be exercised by
   reason of any applicable judgment, decree, order, law or regulation, ten
   business days after such impediment to exercise shall have been removed or
   shall have become final and not subject to appeal, but in no event under
   this clause (iii) later than September 30, 1997); and

                  (iv) payment by Issuer of the Trigger Payment set forth in
   Section 5 of this Agreement to Grantee.

             (d)  Notwithstanding the foregoing, the Option may not be
   exercised if (i) Grantee is in material breach of any of its
   representations or warranties, or in material breach of any of its
   covenants or agreements, contained in this Agreement or in the Merger
   Agreement, or (ii) a Trigger Payment has been paid pursuant to Section 5
   of this Agreement or demand therefor has been made and not withdrawn.

        3.   The obligation of Issuer to issue Option Shares to Grantee
   hereunder is subject to the conditions that

             (a)  the Option Shares, and any Grantee Shares which are issued
   in payment of the Option Price, shall have been approved for listing on
   The Nasdaq Stock Market;

             (b)  all consents, approvals, orders or authorizations of, or
   registrations, declarations or filings with, any federal, state or local
   administrative agency or commission or other federal, state or local
   Governmental Entity, if any, required in connection with the issuance by
   Issuer and the acquisition by Grantee of the Option Shares hereunder shall
   have been obtained or made; and

             (c)  no preliminary or permanent injunction or other order by
   any court of competent jurisdiction prohibiting or otherwise restraining
   such issuance shall be in effect.

   The condition set forth in paragraph (a) above may be waived by Issuer, in
   the case of Grantee Shares, and by Grantee, in the case of Option Shares,
   in the sole discretion of the waiving party.

        4.   At any Closing,

             (a)  Issuer shall deliver to Grantee or its designee a single
   certificate in definitive form representing the number of Option Shares
   designated by Grantee in its Exercise Notice, such certificate to be
   registered in the name of Grantee and to bear the legend set forth in
   Section 13; and 

             (b)  Grantee shall deliver to issuer the aggregate price for the
   Option Shares so designated and being purchased by

                  (i)  wire transfer of immediately available funds or
   certified check or bank check, or

                  (ii) subject to the condition in Section 1(c)(ii), delivery
   of a certificate or certificates representing the number of Grantee Shares
   being issued by Grantee in consideration thereof, determined in accordance
   with Section 4(c).

             (c)  In the event that Grantee issues Grantee Shares to Issuer
   in consideration of Option Shares pursuant to Section 4(b)(ii), the number
   of Grantee Shares to be so issued shall be equal to the quotient obtained
   by dividing:

                  (i)  the product of (x) the number of Option Shares with
   respect to which the Option is being exercised and (y) the Option Price,
   by

                  (ii) the Fair Market Value of the Grantee Shares as of the
   date immediately preceding the date the Exercise Notice is delivered to
   Issuer.

             (d)  Issuer shall pay all expenses, and any and all federal,
   state and local taxes and other charges that may be payable in connection
   with the preparation, issue and delivery of stock certificates under this
   Section 4.

        5.   (a)  Subject to the provisions of Section 8.3(d) of the Merger
   Agreement, if a Trigger Event shall have occurred and any regulatory
   approval or order required for the issuance by Issuer, or the acquisition
   by Grantee, of the Option or the Option Shares upon exercise of the Option
   shall not have been obtained, Grantee shall have the right to receive, and
   Issuer shall pay to Grantee, an amount (the "Trigger Payment") equal to
   the product of

                  (i)  the maximum number of Option Shares that would have
   been subject to purchases by Grantee upon exercise of the Option pursuant
   to Sections 1 and 2 hereof if all such regulatory approvals or orders had
   been obtained, and

                  (ii) the difference between (A) the Market/Offer Price (as
   defined herein), determined as of the date on which notice of demand for
   the Trigger Payment is given by Grantee, and (B) the Option Price (but
   only if such Market/Offer Price is higher than such Option Price).

   Demand for the Trigger Payment shall be given by notice in accordance with
   the provisions of Section 17 hereof.  The Trigger Payment shall be paid to
   Grantee by Issuer on the Payment Date (as defined herein), by wire
   transfer or immediately available funds to an account to be designated in
   writing by Grantee not less than two business days before the Payment
   Date.

             (b)  For purposes of this Section 5, "Payment Date" means the
   date on which termination fees are required to be paid by Issuer to
   Grantee under Sections 8.3(a) or 8.3(b), as the case may be, of the Merger
   Agreement as a result of the occurrence of the Trigger Event referred to
   in subsection (a) of this Section 5 or such later date as Grantee shall
   specify with two business days prior written notice to Issuer.

             (c)  Issuer shall have no obligation to pay the Trigger Payment
   if Grantee is in material breach of any of its representations or
   warranties, or in material breach of any of its covenants or agreements,
   contained in this Agreement or in the Merger Agreement.

        6.   Issuer represents and warrants to Grantee that

             (a)  Issuer has the corporate power and authority to enter into
   this Agreement and to carry out its obligations hereunder, subject in the
   case of the repurchase of the Option Shares pursuant to Section 8(a) to
   applicable law;

             (b)  this Agreement has been duly and validly executed and
   delivered by Issuer, and, assuming the due authorization, execution and
   delivery hereof by Grantee and the receipt of all required regulatory
   approvals, constitutes a valid and binding obligation of Issuer,
   enforceable against Issuer in accordance with its terms;

             (c)  Issuer has taken all necessary corporate action to
   authorize and reserve for issuance and to permit it to issue, upon
   exercise of the Option, and at all times from the date hereof through the
   expiration of the Option will have reserved, the number of authorized and
   unissued Option Shares, such amount being subject to adjustment as
   provided in Sections 1 and 12, all of which, upon their issuance and
   delivery in accordance with the terms of this Agreement, will be duly
   authorized, validly issued, fully paid and nonassessable (except as
   otherwise provided by Section 180.0622(2)(b) of the Wisconsin Business
   Corporation Law);

             (d)  upon delivery of the Option Shares to Grantee upon the
   exercise of the Option, Grantee will acquire the Option Shares free and
   clear of all claims, liens, charges, encumbrances and security interests
   of any nature whatsoever;

             (e)  except as described in Section 3.4 of the Merger Agreement,
   the execution and delivery of this Agreement by Issuer does not, and,
   subject to compliance with applicable law with respect to the repurchase
   of the Option Shares pursuant to Section 8(a), the consummation by Issuer
   of the transactions contemplated hereby will not, violate, conflict with,
   or result in a breach of any provision of, or constitute a default (with
   or without notice or a lapse of time, or both) under, or result in the
   termination of, or accelerate the performance required by, or result in a
   right of termination, cancellation, or acceleration of any obligation or
   the loss of a material benefit under, or the creation of a lien, pledge,
   security interest or other encumbrance on assets (any such conflict,
   violation, default, right of termination, cancellation, acceleration, loss
   or creation, hereinafter a "Violation") of Issuer or any of its
   Subsidiaries, pursuant to

                  (i)  any provision of the Articles of Incorporation or the
   Bylaws of Issuer,

                  (ii) any provisions of any material loan or credit
   agreement, note, mortgage, indenture, lease, benefit plan or other
   agreement, obligation, instrument, permit, concession, franchise or
   license (any of the foregoing in effect on the date hereof being referred
   to as a "Material Contract") of Issuer or its Subsidiaries or to which any
   of them is a party, or

                  (iii)     any judgment, order, decree, statute, law,
   ordinance, rule or regulation applicable to Issuer or its properties or
   assets,

   which Violation, in the case of each clauses (ii) and (iii), could
   reasonably be expected to have a Material Adverse Effect on Issuer (except
   that no representation or warranty is given concerning any Violation of a
   Material Contract with respect to the repurchase of Option Shares pursuant
   to Section 8(a));

             (f)  except as described in Section 3.4 of the Merger Agreement,
   the execution and delivery of this Agreement by Issuer does not, and the
   performance of this Agreement by Issuer will not, require any consent,
   approval, authorization or permit of, filing with or notification to, any
   Governmental Entity;

             (g)  none of Issuer, any of its affiliates or anyone acting on
   its or their behalf, has issued, sold or offered any security of Issuer to
   any person under circumstances that would cause the issuance and sale of
   the Option Shares, as contemplated by this Agreement, to be subject to the
   registration requirements of the Securities Act of 1933, as amended (the
   "Securities Act"), as in effect on the date hereof, and, assuming the
   representations and warranties of Grantee contained in Section 7(g) are
   true and correct, the issuance, sale and delivery of the Option Shares
   hereunder would be exempt from the registration and prospectus delivery
   requirements of the Securities Act, as in effect on the date hereof (and
   Issuer shall not take any action which would cause the issuance, sale, and
   delivery of the Option Shares hereunder not to be exempt from such
   requirements); and

             (h)  any Grantee Shares acquired pursuant to this Agreement will
   be acquired for Issuer's own account, for investment purposes only, and
   will not be acquired by Issuer with a view to the public distribution
   thereof in violation of any applicable provision of the Securities Act.

        7.   Grantee represents and warrants to Issuer that

             (a)  Grantee has the corporate power and authority to enter into
   this Agreement and to carry out its obligations hereunder;

             (b)  this Agreement has been duly and validly executed and
   delivered by Grantee and, assuming the due authorization, execution and
   delivery hereof by Issuer and the receipt of all required regulatory
   approvals, constitutes a valid and binding obligation of Grantee,
   enforceable against Grantee in accordance with its respective terms;

             (c)  prior to any delivery of Grantee Shares in consideration of
   the purchase of Option Shares pursuant hereto, Grantee will have taken all
   necessary corporate action to authorize for issuance and to permit it to
   issue such Grantee Shares, all of which, upon their issuance and delivery
   in accordance with the terms of this Agreement, will be duly authorized,
   validly issued, fully paid and nonassessable (except as otherwise provided
   in Section 180.0622(2)(b) of the Wisconsin Business Corporation Law);

             (d)  upon any delivery of such Grantee Shares to Issuer in
   consideration of the purchase of the Option Shares pursuant hereto, Issuer
   will acquire the Grantee Shares free and clear of all claims, liens,
   charges, encumbrances and security interests of any nature whatsoever;

             (e)  except as described in Section 3.4 of the Merger Agreement,
   the execution and delivery of this Agreement by Grantee does not, and the
   consummation by Grantee of the transactions contemplated hereby will not,
   violate, conflict with, or result in the breach of any provision of, or
   constitute a default (with or without notice or a lapse of time, or both)
   under, or result in any Violation by Grantee or any of its Subsidiaries,
   pursuant to

                  (i)  any provision of the Articles of Incorporation or
   Bylaws of Grantee,

                  (ii) any Material Contract of Grantee or any of its
   Subsidiaries or to which any of them is a party, or

                  (iii)     any judgment, order, decree, statute, law,
   ordinance, rule or regulation applicable to Grantee or its properties or
   assets,

   which Violation, in the case of each of clauses (ii) or (iii), would have
   a Material Adverse Effect on Grantee;

             (f)  except as described in Section 3.4 of the Merger Agreement,
   the execution and delivery of this Agreement by Grantee does not, and the
   consummation by Grantee of the transactions contemplated hereby will not,
   require any consent, approval, authorization or permit of, filing with or
   notification to, any Governmental Entity; and

             (g)  any Option Shares acquired upon exercise of the Option will
   be acquired for Grantee's own account, for investment purposes only and
   will not be, and the Option is not being, acquired by Grantee with a view
   to the public distribution thereof, in violation of any applicable
   provision of the Securities Act.

        8.   (a)  At the request of Grantee by written notice (x) at any time
   during which the Option is exercisable pursuant to Section 2 (the
   "Repurchase Period"), Issuer (or any successor entity thereof) shall, if
   permitted by applicable law, the Articles of Incorporation and Bylaws of
   the Issuer and Issuer's Material Contracts, repurchase from Grantee all or
   any portion of the Option, at the price set forth in subparagraph (i)
   below, or, (y) at any time prior to September 30, 1997, Issuer (or any
   successor entity thereof) shall, if permitted by applicable law, the
   Articles of Incorporation and Bylaws of Issuer and Issuer's Material
   Contracts, repurchase from Grantee all or any portion of the Option Shares
   purchased by Grantee pursuant to the Option, at the price set forth in
   subparagraph (ii) below:

                  (i)  (A)  The difference between the "Market/Offer Price"
   (as defined below) for shares of Issuer Common Stock as of the date
   Grantee gives notice of its intent to exercise its rights under this
   Section 8 and the Option Price, multiplied by the number of Option Shares
   purchasable pursuant to the Option (or portion thereof with respect to
   which Grantee is exercising its rights under this Section 8), but only if
   the Market/Offer Price is greater than the Option Price.

                       (B)  For purposes of this Agreement, "Market/Offer
   Price" shall mean, as of any date, the higher of (I) the price per share
   offered as of such date pursuant to any tender or exchange offer or other
   offer with respect to a Business Combination involving Issuer as the
   Target Party which was made prior to such date and not terminated or
   withdrawn as of such date and (II) the Fair Market Value per share of
   Issuer Common Stock as of such date.

                  (ii) (A)  The product of (I) the sum of (a) the Option
   Price paid by Grantee per Option Share acquired pursuant to the Option,
   and (b) the difference between the "Offer Price" (as defined below) and
   the Option Price, but only if the Offer Price is greater than the Option
   Price, and (II) the number of Option Shares so to be repurchased pursuant
   to this Section 8.

                       (B)  For purposes of this clause (ii), the "Offer
   Price" shall be the highest price per share offered pursuant to a tender
   or exchange offer or other Business Combination offer involving Issuer as
   the Target Party during the Repurchase Period prior to the delivery by
   Grantee of a notice of repurchase.

             (b)  If Grantee shall have previously elected to purchase Option
   Shares pursuant to the exercise of the Option by the issuance and delivery
   of Grantee Shares, then Issuer shall, if so requested by Grantee, in
   fulfillment of its obligation pursuant to Section 8(a)(y) (that is, with
   respect to the Option Price only and without limitation to its obligation
   to pay additional consideration under clause (b) of Section
   8(a)(ii)(A)(I)), redeliver the certificates for such Grantee Shares to
   Grantee, free and clear of all liens, claims, charges and encumbrances of
   any kind or nature whatsoever; provided, however, that if at any time less
   than all of the Option Shares so purchased by Grantee pursuant to the
   Option are to be repurchased by Issuer pursuant to Section 8(a)(y), then
   (i) Issuer shall be obligated to redeliver to Grantee the same proportion
   of such Grantee Shares as the number of Option Shares that Issuer is then
   obligated to repurchase bears to the number of Option Shares acquired by
   Grantee upon exercise of the Option and (ii) Grantee shall issue to Issuer
   new certificates representing those Grantee Shares which are not due to be
   redelivered to Grantee pursuant to this Section 8(b) to the extent that
   excess Grantee Shares are included in the certificates redelivered to
   Grantee by Issuer.

             (c)  In the event Grantee exercises its rights under this
   Section 8, Issuer shall, within ten business days thereafter, pay the
   required amount to Grantee in immediately available funds and Grantee
   shall surrender to Issuer the Option or the certificate or certificates
   evidencing the Option Shares purchased by Grantee pursuant hereto, and
   Grantee shall warrant that it owns the Option or such shares and that the
   Option or such shares are then free and clear of all liens, claims,
   damages, charges and encumbrances of any kind or nature whatsoever.

             (d)  If Grantee has elected to purchase Option shares pursuant
   to the exercise of the Option by the issuance and delivery of Grantee
   Shares, notwithstanding that Grantee may no longer hold any such Option
   Shares or that Grantee elects not to exercise its other rights under this
   Section 8, Grantee may require, at any time or from time to time prior to
   September 30, 1997, Issuer to sell to Grantee any such Grantee Shares at
   the price attributed to such Grantee Shares pursuant to Section 4 plus
   interest at the publicly announced prime rate as published in the Wall
   Street Journal (Midwest Edition) on such amount from the Closing Date
   relating to the exchange of such Grantee shares pursuant to Section 4 to
   the Closing Date under this Section 8(d) less any dividends on such
   Grantee Shares paid during such period or declared and payable to
   shareholders of record on a date during such period.

             (e)  In the event the repurchase price specified in Section 8(a)
   would subject the purchase of the Option or the Option Shares purchased by
   Grantee pursuant to the Option to a vote of the shareholders of Issuer
   pursuant to applicable law or the Articles of Incorporation of Issuer,
   then Grantee may, at its election, reduce the repurchase price to an
   amount which would permit such repurchase without the necessity for such a
   shareholder vote.

        9.   Following the date hereof and prior to the fifth anniversary of
   the date hereof (the "Expiration Date"), each party shall vote any shares
   of capital stock of the other party acquired by such party pursuant to
   this Agreement ("Restricted Shares"), including any Grantee Shares issued
   pursuant to Section 1(c), or otherwise beneficially owned (within the
   meaning of Rule 13d-3 promulgated under the Securities Exchange Act of
   1934, as amended (the "Exchange Act")), by such party on each matter
   submitted to a vote of shareholders of such other party for and against
   such matter in the same proportion as the vote of all other shareholders
   of such other party are voted (whether by proxy or otherwise) for and
   against such matter.

        10.  (a)  Prior to the Expiration Date, neither party shall, directly
   or indirectly, sell, assign, pledge, or otherwise dispose of or transfer
   any Restricted Shares beneficially owned by such party, other than (i)
   pursuant to Section 8, or (ii) in accordance with Section 10(b) or
   Section 11.

             (b)  Following the termination of the Merger Agreement, a party
   shall be permitted to sell any Restricted Shares beneficially owned by it
   if such sale is made pursuant to a tender or exchange offer that has been
   approved or recommended, or otherwise determined to be fair to and in the
   best interests of the shareholders of the other party, by a majority of
   the members of the Board of Directors of such other party, which majority
   shall include a majority of directors who were directors prior to the
   announcement of such tender or exchange offer.

        11.  (a)  Following the termination of the Merger Agreement, either
   party hereto that owns Restricted Shares (a "Designated Holder") may by
   written notice (the "Registration Notice") to the other party (the
   "Registrant") request the Registrant to register under the Securities Act
   all or any part of the Restricted Shares beneficially owned by such
   Designated Holder (the "Registrable Securities") pursuant to a bona fide
   firm commitment underwritten public offering, in which the Designated
   Holder and the underwriters shall effect as wide a distribution of such
   Registrable Securities as is reasonably practicable and shall use their
   best efforts to prevent any person (including any Group (as used in Rule
   13d-5 under the Exchange Act)) and its affiliates from purchasing through
   such offering Restricted Shares representing more than 1% of the
   outstanding shares of common stock of the Registrant on a fully diluted
   basis (a "Permitted Offering").

             (b)  The Registration Notice shall include a certificate
   executed by the Designated Holder and its proposed managing underwriter,
   which underwriter shall be an investment banking firm of recognized
   standing on a national or regional basis (the "Manager"), stating that

                  (i)  they have a good faith intention to commence promptly
   a Permitted Offering, and

                  (ii) Manager in good faith believes that, based on the
   then-prevailing market conditions, it will be able to sell the Registrable
   Securities at a per share price equal to at least 80% of the then Fair
   Market Value of such shares.

             (c)  The Registrant (and/or any person designed by the
   Registrant) shall thereupon have the option exercisable by written notice
   delivered to the Designated Holder within ten business days after the
   receipt of the Registration Notice, irrevocably to agree to purchase all
   or any part of the Registrable Securities proposed to be so sold for cash
   at a price equal to the product of (i) the number of Registrable
   Securities to be so purchased by the Registrant and (ii) the then Fair
   Market Value of such shares.

             (d)  Any purchase of Registrable Securities by the Registrant
   (or its designee) under Section 11(c) shall take place at a closing to be
   held at the principal executive offices of the Registrant or at the
   offices of its counsel at any reasonable date and time designated by the
   Registrant and/or such designee in such notice within twenty business days
   after delivery of such notice, and any payment for the shares to be so
   purchased shall be made by delivery at the time of such closing in
   immediately available funds.

             (e)  If the Registrant does not elect to exercise its option
   pursuant to this Section 11 with respect to all Registrable Securities, it
   shall use its best efforts to effect, as promptly as practicable, the
   registration under the Securities Act of the unpurchased Registrable
   Securities proposed to be so sold; provided, however, that

                  (i)  neither party shall be entitled to demand more than an
   aggregate of two effective registration statements hereunder, and

                  (ii) the Registrant will not be required to file any such
   registration statement during any period of time (not to exceed 40 days
   after such request in the case of clause (A) below or 90 days in the case
   of clauses (B) and (C) below) when

                       (A)  the Registrant is in possession of material non-
   public information which it reasonably believes would be detrimental to be
   disclosed at such time and, in the opinion of counsel to the Registrant,
   such information would be required to be disclosed if a registration
   statement were filed at that time;

                       (B)  the Registrant is required under the Securities
   Act to include audited financial statements for any period in such
   registration statement and such financial statements are not yet available
   for inclusion in such registration statement; or 

                       (C)  the Registrant determines, in its reasonable
   judgment, that such registration would interfere with any financing,
   acquisition or other material transaction involving the Registrant or any
   of its affiliates.

             (f)  The Registrant shall use its reasonable best efforts to
   cause any Registrable Securities registered pursuant to this Section 11 to
   be qualified for sale under the securities or Blue Sky laws of such
   jurisdictions as the Designated Holder may reasonably request and shall
   continue such registration or qualification in effect in such
   jurisdiction; provided, however, that the Registrant shall not be required
   to qualify to do business in, or consent to general service of process in,
   any jurisdiction by reason of this provision.

             (g)  The registration rights set forth in this Section 11 are
   subject to the condition that the Designated Holder shall provide the
   Registrant with such information with respect to such holder's Registrable
   Securities, the plans for the distribution thereof, and such other
   information with respect to such holder as, in the reasonable judgment of
   counsel for the Registrant, is necessary to enable the Registrant to
   include in such registration statement all material facts required to be
   disclosed with respect to a registration thereunder.

             (h)  A registration effected under this Section 11 shall be
   effected at the Registrant's expense, except for underwriting discounts
   and commissions and the fees and the expenses of counsel to the Designated
   Holder, and the Registrant shall provide to the underwriters such
   documentation (including certificates, opinions of counsel and "comfort"
   letters from auditors) as is customary in connection with underwritten
   public offerings as such underwriters may reasonably require.

             (i)  In connection with any registration effected under this
   Section 11, the parties agree

                  (i)  to indemnify each other and the underwriters in the
   customary manner,

                  (ii) to enter into an underwriting agreement in form and
   substance customary for transactions of such type with the Manager and the
   other underwriters participating in such offering, and

                  (iii)     to take all further actions which shall be
   reasonably necessary to effect such registration and sale (including if
   the Manager deems it necessary, participating in road show presentations).

             (j)  The Registrant shall be entitled to include (at its
   expense) additional shares of its common stock in a registration effected
   pursuant to this Section 11 only if and to the extent the Manager
   determines that such inclusion will not adversely affect the prospects for
   success of such offering.

        12.  Without limitation to any restriction on Issuer contained in
   this Agreement or in the Merger Agreement, in the event of any change in
   Issuer Common Stock by reason of stock dividends, splitups, mergers (other
   than the Merger), recapitalizations, combinations, exchange of shares or
   the like, the type and number of shares or securities subject to the
   Option, and the Option Price provided in Section 1, shall be adjusted
   appropriately to restore to Grantee its rights hereunder, including the
   right to purchase from Issuer (or its successors) shares of Issuer Common
   Stock (or such other shares or securities into which Issuer Common Stock
   has been so changed) for the aggregate Option Price as provided in Section
   1.

        13.  Each certificate representing Option Shares issued to Grantee
   hereunder, and Grantee Shares, if any, delivered to Issuer at a Closing,
   shall include a legend in substantially the following form:

        THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
        REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY
        STATE SECURITIES OR BLUE SKY LAWS, AND MAY BE REOFFERED OR SOLD
        ONLY IF SO REGISTERED OR IF AN EXEMPTION FROM SUCH REGISTRATION
        IS AVAILABLE.  SUCH SECURITIES ARE ALSO SUBJECT TO ADDITIONAL
        RESTRICTIONS ON TRANSFER AS SET FORTH IN A STOCK OPTION AND
        TRIGGER PAYMENT AGREEMENT, DATED AS OF NOVEMBER 13, 1996, A COPY
        OF WHICH MAY BE OBTAINED FROM THE ISSUER UPON REQUEST.

   It is understood and agreed that:

                  (i)  the reference to the resale restrictions of the
   Securities Act and state securities or Blue Sky laws in the above legend
   shall be removed by delivery of substitute certificate(s) without such
   reference if Grantee or Issuer, as the case may be, shall have delivered
   to the other party a copy of a letter from the staff of the Securities and
   Exchange Commission, or an opinion of counsel, in form and substance
   reasonably satisfactory to the other party, to the effect that such legend
   is not required for purposes of the Securities Act or such laws;

                  (ii) the reference to the provisions to this Agreement in
   the above legend shall be removed by delivery of substitute certificate(s)
   without such reference if the shares have been sold or transferred in
   compliance with the provisions of this Agreement and under circumstances
   that do not require the retention of such reference; and

                  (iii)     the legend shall be removed in its entirety if
   the conditions in the preceding clauses (i) and (ii) are both satisfied.

   In addition, such certificates shall bear any other legend as may be
   required by law.  Certificates representing shares sold in a registered
   public offering pursuant to Section 11 shall not be required to bear the
   legend set forth in this Section 13.

        14.  (a)  This Agreement shall be binding upon and inure to the
   benefit of the parties hereto and their respective successors and
   permitted assigns.

             (b)  Except as expressly provided for in this Agreement, neither
   this Agreement nor the rights or obligations of either party hereto are
   assignable, except by operation of law, or with the written consent of the
   other party.

             (c)  Nothing contained in this Agreement, express or implied, is
   intended to confer upon any person other than the parties hereto and their
   respective successors and permitted assigns any rights or remedies of any
   nature whatsoever by reason of this Agreement.

             (d)  Any Restricted Shares sold by a party in compliance with
   the provisions of Section 11 shall, upon consummation of such sale, be
   free of the restrictions imposed with respect to such shares by this
   Agreement, unless and until such party shall repurchase or otherwise
   become the beneficial owner of such shares, and any transferee of such
   shares shall not be entitled to the registration rights of such party.

             15.  The parties hereto acknowledge that damages would be an
   inadequate remedy for a breach of this Agreement by either party hereto
   and that the obligations of the parties hereto shall be enforceable by
   either party hereto through injunctive or other equitable relief.

             16.  If any term, provision, covenant or restriction contained
   in this Agreement is held by a court or a federal or state regulatory
   agency of competent jurisdiction to be invalid, void or unenforceable, the
   remainder of the terms, provisions and covenants and restrictions
   contained in this Agreement shall remain in full force and effect, and
   shall in no way be affected, impaired or invalidated.  Subject to Section
   5, if for any reason any such court or regulatory agency determines that
   Grantee is not permitted to acquire, or Issuer is not permitted to
   repurchase pursuant to Section 8, the full number of Option Shares
   provided in Section 1 hereof (as the same may be adjusted), it is the
   express intention of Issuer to allow Grantee to acquire or to require
   Issuer to repurchase such lesser number of shares as may be permissible
   without any amendment or modification hereof.

             17.  All notices and other communications hereunder shall be in
   writing and shall be deemed given if delivered personally, telecopied
   (with confirmation), mailed by registered or certified mail (return
   receipt requested) or delivered by an express courier (with confirmation) 
   at the respective addresses of the parties set forth in the Merger
   Agreement (or at such other address for a party as shall be specified by
   like notice).

             18.  This Agreement shall be governed by and construed in
   accordance with the laws of the State of Wisconsin, regardless of the laws
   that might otherwise govern under applicable principles of conflicts of
   laws thereof.

             19.  This Agreement may be executed in two or more counterparts,
   each of which shall be deemed to be an original, but all of which shall
   constitute one and the same agreement.

             20.  Except as otherwise expressly provided herein, each of the
   parties hereto shall bear and pay all costs and expenses incurred by it or
   on its behalf in connection with the transactions contemplated hereunder,
   including fees and expenses of its own financial consultants, investment
   bankers, accountants and counsel.

             21.  Except as otherwise expressly provided herein or in the
   Merger Agreement, this Agreement contains the entire agreement between the
   parties with respect to the transactions contemplated hereunder and
   supersedes all prior arrangements or understandings with respect thereof,
   written or oral.

             22.  This Agreement may be amended by the parties hereto and the
   terms and conditions hereof may be waived only by an instrument in writing
   signed on behalf of each of the parties hereto, or, in the case of a
   waiver, by an instrument signed on behalf of the party waiving compliance.

             23.  The time periods for exercises of certain rights under
   Sections 2, 5 and 8 shall be extended (but in no event by more than six
   months):

             (a)  to the extent necessary to obtain all regulatory approvals
   for the exercise of such rights; and 

             (b)  to the extent necessary to avoid any liability under
   Section 16(b) of the Exchange Act by reason of such exercise.

             24.  Capitalized terms used in this Agreement and not defined
   herein shall have the meanings assigned thereto in the Merger Agreement.

             IN WITNESS WHEREOF, each of the parties has caused this
   Agreement to be executed on its behalf by its officers thereunto duly
   authorized, all as of the date first above written.

                                      FCB FINANCIAL CORP.

                                      By:/s/ Donald D. Parker
                                           Donald D. Parker
                                           President and Chief Executive
                                           Officer

                                      OSB FINANCIAL CORP.


                                      By:/s/ James J. Rothenbach
                                           James J. Rothenbach
                                           President and Chief Executive
                                           Officer