Irvin is returning from a four-week suspension for violating the NFL's policy on performance-enhancing drugs, and the Seahawks must let someone go before they can activate Irvin. Linebacker Bruce Irvin will play Sunday, which means the Seattle Seahawks will have to make a roster move before then. The Seahawks took that step Saturday and activated Irvin to their roster. The Seahawks have waived wide receiver Stephen Williams and activated linebacker Bruce Irvin, the team announced Saturday. But releasing Williams means Seattle enters Sunday game against the Indianapolis Colts with only four wide receivers Golden Tate Sidney Rice and Jermaine Kearse Williams was signed in the offseason as a free agent who spent two seasons with the Arizona Cardinals .