Minn. Stat. § 80F.06

The supplier may set forth in the marketing agreement any prohibitions and limitations on the conduct of any other businesses at the facility, including a charge for additional rent where another business is permitted and conducted. However, the supplier shall not unreasonably withhold consent to the performance of another business, impose unreasonable limitations on the dealer's ability to perform any other business, or charge an unreasonable rent for the conduct of another business, considering the fair rental value of the site and any imposition upon the supplier's business.