The San Francisco 49ers' offseason roster tweaking continued Tuesday when the club announced the addition of a new undrafted rookie cornerback. CB Derrick Canteen signed a three-year deal with San Francisco as their seventh UDFA addition after impressing in a tryout at rookie minicamp.

Cleveland Browns quarterback Deshaun Watson (4) is tackled by Pittsburgh Steelers safety Minkah Fitzpatrick, right, and Damontae Kazee, left, during the second half of an NFL football game in Pittsburgh, Sunday, Jan. 8, 2023. (AP Photo/Matt Freed) AP

Cooper is a 6-foot-3, 280-pound defensive end who played collegiately at Tulane and then Houston, going undrafted after completing his Cougars career. He primarily played DE for Houston, racking up 3.5 sacks in his final year. He's a crush-the-can style of EDGE that the Lions favor, and that showed in Friday's rookie minicamp session.