49ers Sign WRs Callaway, Isabella, QB Bradley, Waive Four Players

The San Francisco 49ers have made several roster moves, signing wide receivers Andy Isabella and Marquez Callaway, running back Ameer Abdullah, and quarterback Carter Bradley following a recent workout. Isabella, a former second-round pick by the Cardinals, has NFL experience with the Bills, Ravens, Steelers, and Cardinals and recently played in the UFL before joining the 49ers. Callaway, who previously played for the Saints and Buccaneers, and Bradley, a former practice squad member with the Raiders and son of coach Gus Bradley, also joined the team. To make room, the 49ers released Equanimeous St. Brown, Sebastian Gutierrez, Malik Knowles, and Jaylen Mahoney, while activating Ben Bartch from the non-football injury list. These additions provide depth at the wide receiver and quarterback positions, especially as key players like Brandon Aiyuk and Jauan Jennings recover from injuries. The signings reflect the 49ers' efforts to strengthen their roster ahead of the season.