Watkins signed with the Cardinals on Thursday, Aaron Wilson of KPRC 2 Houston reports.
Watkins, who has had the offseason to rebound from a calf injury he sustained in the divisional round of the playoffs, is a six-year veteran and has played for both the Texans and Cowboys. Last year in Dallas, he tallied 26 total tackles across 12 games and 270 defensive snaps. He figures to occupy a rotational role along the defensive line with his new team.