Okla. Stat. tit. 11, § 11-43-116: Municipal real estate contracts — Contingencies allowed

— Restrictions.

A municipality may enter into a real estate contract for the

sale, conveyance, or exchange of real property, option to purchase

real property, or a lease with an option to purchase real property

that includes a contingency, not to exceed one hundred eighty (180)

days, for the purposes of securing required permits, lot changes,

zoning changes, and any other land use approvals necessary to use

and operate the real property.