Santa Clara – The 49ers received a huge blow when right tackle Trent Brown injured his shoulder five plays before practice ended on Thanksgiving. He made an appearance on the injury report Friday and won’t make the start against Seattle. Eric Magnuson, a rookie free agent from Michigan, will make his second start of the season. And expect the 49ers to provide help in pass rush on the right side.
Cassius Marsh, newly claimed from the Patriots, will be active today against his former team, Seattle. Marsh can help the team Sunday. The 245-pound Marsh is a pass rusher who can also help on special teams. The 49ers will have Sheldon Day who was claimed from Jacksonville from Monday, will also be active and could back up DeForest Buckner at the three-technique.
Wide receiver Trent Taylor, who injured his ribs against Arizona. will also be active and could return to his duties as slot receiver and a punt returner
