Overview

• San Francisco announced the signings of veteran lineman Michael Dunn and the return of receiver Malik Knowles, who was in camp in June before being waived on July 31.
• To create roster space, the 49ers released defensive tackle Demone Harris and placed rookie running back Corey Kiner on waivers with an injury designation.
• Kiner sustained a significant high‑ankle sprain in the second preseason game, prompting the waive/injured move.
• Dunn, 30, has starts with the Browns from 2020 to 2024 and has played both guard and center while grading better as a run blocker.
• Injuries and readiness concerns on the offensive line, including Ben Bartch being out and rookie Connor Colby still developing, pushed the team to add experienced interior depth.