Mich. Comp. Laws § 322.308

Sec. 8. The governor of the state shall sign and cause to be issued, patents for the lands described in any certificate of purchase whenever the same shall be presented to him, with the further certificate of the commissioner endorsed thereon, that the whole amount of principal and interest specified therein, together with the taxes, charges and interest levied upon said land, have been paid according to law, and that the holder of the certificate of purchase, whether as original purchaser or as purchaser of the right, title and interest of such original purchaser at an execution or mortgage sale, is entitled to a deed therefor.