The Cleveland Browns signed rookie quarterback Baker Mayfield to a four-year deal worth $32.68 million— all of which is guaranteed, according to a report Tuesday by the NFL Network’s Ian Rapoport.

The Browns posted a photo late Tuesday of the former Oklahoma quarterback signing his deal, which includes a $21.85 million signing bonus.

Mayfield was drafted first overall in the 2018 NFL Draft by the Browns after three seasons at Oklahoma and one at Texas Tech.