(a) Except in the case of a sale in which delivery of a public offering statement is required, or unless exempt under section 4-101(b), a unit owner shall furnish to a purchaser before execution of any contract for sale of a unit, or otherwise before conveyance, a copy of the declaration (other than any plats and plans), the bylaws, the rules or regulations of the association, and a certificate containing:
(1) A statement disclosing the effect on the proposed disposition of any right of first refusal or other restraint on the free alienability of the unit;