Harris was released by the 49ers on September 3 during the team's final roster cuts. He was re-signed days later on September 5. That was the same day that the 49ers signed Harper to the practice squad.
Harris was a late-season addition by the 49ers in 2015. He rushed for 140 yards on 27 carries in the final two games of the season.
Harper will wear No. 14 tonight when the 49ers host the Los Angeles Rams at Levi's Stadium. He joined the NFL with the New England Patriots when he was signed as an undrafted free agent in May of 2015. He started on their practice squad, but was later elevated to the active roster and appeared in five games. He only had one reception for six yards through five appearances.
Harper was released by the Patriots on September 3.