Quarterback Ian Book, a former fourth-round draft pick of Sean Payton’s, is attending Denver’s rookie minicamp as a veteran tryout player.

With Desmond Ridder backing out of his tryout at Broncos rookie minicamp, the club is bringing in a quarterback who has been with head coach Sean Payton before.

Per Mike Klis, the Broncos are hosting three tryout players at their rookie minicamp, including QB Ian Book. The team is also hosting TE Cole Fotheringham and RB Chris Evans.