Cohen misses practice; Fields leaves practice

The San Francisco 49ers are preparing for their Week 4 contest against the Arizona Cardinals on Sunday at Levi's Stadium in Santa Clara, California. Deebo Samuel continues to rack up the absences. For the third time this week, the wide receiver missed practice. He did not participate in Monday's bonus practice or Wednesday's session. Samuel was on the field for the team's walk-through on Thursday but left for the weight room once his teammates started stretching in preparation for practice. Linebacker Dre Greenlaw returned to practice for the first time this week after missing time due to an ankle injury. Wide receiver Brandon Aiyuk (shoulder) shed his blue no-contact jersey, a sign that he could be nearing a return after being among the 49ers' inactives last

The San Francisco 49ers will hold four full practices this week as the team prepares for its Week 4 matchup against the Arizona Cardinals. Head coach Kyle Shanahan, defensive coordinator Steve Wilks, offensive line/run game coordinator Chris Foerster, and quarterback Brock Purdy are scheduled to speak with the media. The 49ers will make the press conferences available at 49ers.com, on the team's official mobile app, and YouTube page. The schedule, which is subject to change, for the upcoming week is below. All times are

San Francisco 49ers wide receiver Brandon Aiyuk is on hand for Monday's bonus practice. It's the first of four practices this week, as the team is coming off a long weekend following its Thursday night win over the New York Giants. Coaches and players had the weekend off. Brandon Aiyuk on hand for the start of 49ers practice pic.twitter.com/2n1Dlvp06g— KNBR (@KNBR)

The San Francisco 49ers have signed RB Jeremy McNichols to the team's practice squad and released TE Troy Fumagalli. The 49ers Communications staff provided the following rundown. McNichols (5-9, 205) was originally drafted by the Tampa Bay Buccaneers in the fifth round (162nd overall) of the 2017 NFL Draft. Throughout his five-year NFL career with the Buccaneers, San Francisco 49ers (2017), Indianapolis Colts (2018), Jacksonville Jaguars (2019) and Tennessee Titans (2020-21), he has appeared in 34 games and registered 90 carries for 364 yards (4.0 average) and one touchdown on the ground to go along with 40 receptions for 295 yards (7.4 average) and one touchdown through the air. He has also