Raheem Mostert left Sunday's game against the Giants with a shoulder injury and is questionable to return, Matt Maiocco of NBC Sports Bay Area reports.
Raheem Mostert carried the ball four times for 11 yards but also lost a fumble in Thursday's 41-39 loss to the Rams.
Raheem Mostert didn't record an offensive touch Sunday against the Panthers.
Raheem Mostert survived Saturday's final roster cuts and will serve as a backup running back and special teams contributor.
Raheem Mostert rushed four times for 26 yards and a touchdown Sunday, but he did the majority of his damage on two receptions for 104 yards and another score in a preseason win over Minnesota.