Mich. Comp. Laws § 91.2

Sec. 2. (1) The council may prescribe the terms and conditions upon which a license shall be granted and may require payment of a reasonable sum for a license. The person receiving the license shall, before the license is issued, execute a bond to the corporation, if required by the council, in a sum prescribed by the council, with 1 or more sufficient sureties, conditioned for a faithful observance of the charter of the corporation and the ordinances of the council, and otherwise conditioned as the council may prescribe. (2) A license is revocable by the council. If a license is revoked for noncompliance with the terms and conditions upon which it was granted, or on account of a violation of an ordinance or regulation passed or authorized by the council, the person holding the license shall, in addition to any other sanctions imposed, forfeit payments made for the license.