A meeting of a governmental body may be closed to discuss the consideration the governmental body is willing to offer or accept when considering the purchase, sale, exchange, lease, or market value of real property. Ala. Code § 36-25A-7(a)(6) (Supp. 2005). However, if an executive session is convened, in addition to the members of the governmental body, only persons representing the interests of the governmental body in the transaction may be present during the executive session.