The following release is courtesy of the San Francisco 49ers
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.
The #49ers announced they have signed OL Michael Dunn and WR Malik Knowles to one-year deals.
📰: https://t.co/KvpexzYNks pic.twitter.com/3XU0KuXFhW
— San Francisco 49ers (@49ers) August 20, 2025
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 the San Francisco 49ers 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.
More San Francisco 49ers content from Sactown Sports
San Francisco 49ers wide receiver Demarcus Robinson has been suspended for the first three games of the upcoming NFL season for violating the league’s substance abuse policy.
The suspension is not yet official as Robinson and the 49ers work through the appeal process, according to NFL Network.
San Francisco 49ers head coach Kyle Shanahan confirmed the news on a San Francisco Bay Area radio show on Wednesday.
“You can always appeal it, so we’ll hope for the best on that, but (three weeks) is what we’re planning for,” Shanahan said.
In July 2025, the 30-year-old Robinson pleaded no contest to a misdemeanor DUI charge he received in November 2024 as a member of the Los Angeles Rams.
Robinson was sentenced to three years’ probation and ordered to pay a $390 fine following the incident.
The standard suspension in the NFL for a first-time DUI offense is three games.
Robinson’s absence would be another blow to a San Francisco 49ers’ receiver room that could already be without Brandon Aiyuk (recovering from a torn ACL) and Jauan Jennings (calf injury) to start the year.
49ers wideout Demarcus Robinson suspended for three games
Upcoming San Francisco 49ers Schedule
Preseason
Saturday, August 23rd – vs. Los Angeles Chargers – 5:30 PM PT
Regular Season
Sunday, September 7th – @ Seattle Seahawks – 1:05 PM PT *Season opener*
Sunday, September 14th – @ New Orleans Saints – 10:00 AM PT
Sunday, September 21st – vs. Arizona Cardinals – 1:25 PM PT
Sunday, September 28th – vs. Jacksonville Jaguars – 1:05 PM PT
Thursday, October 2nd – @ Los Angeles Rams – 5:15 PM PT
Thank you for reading SactownSports.com. Follow us on Twitter and Google News, and subscribe to our YouTube channel.
