The San Francisco 49ers today announced they have signed OL Michael Dunn and WR Malik Knowles to one-year deals. In order to make room on the roster, the team released DL Demone Harris and waived/injured RB Corey Kiner.
Dunn (6-5, 315) originally entered the NFL after signing with the Los Angeles Rams as an undrafted free agent on June 16, 2017. Throughout his eight-year NFL career with the Rams (2017-18), Jacksonville Jaguars (2018-19), Miami Dolphins (2019) and Cleveland Browns (2020-24), he has appeared in 53 regular season games (nine starts) and two postseason contests (one start). In 2024, Dunn appeared in 13 games (three starts) with the Browns.
A 30-year-old native of Bethesda, MD, Dunn attended the University of Maryland for five seasons (2012-16) where he appeared in 46 games.
Knowles (6-2, 196) originally entered the NFL after signing with the Minnesota Vikings as an undrafted free agent on May 1, 2023. He has spent his two-year career with the Vikings (2023-24) and Green Bay Packers (2024). He signed with San Francisco on June 3, 2025 prior to being waived by the team on July 31.
A 25-year-old native of Mansfield, TX, Knowles attended Kansas State University (2018-22) where he appeared in 51 games (39 starts) and totaled 127 receptions for 1,867 yards and 14 touchdowns through the air to go along with 36 carries for 440 yards and four touchdowns on the ground. He earned Second-Team All-Big 12 in 2021.
Harris (6-4, 265) originally signed with the team on August 14, 2025. Kiner (5-9, 209) originally signed as an undrafted free agent with the team on April 28, 2025.
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