Harris, 29 on Sunday, inked a deal with Jacksonville on Aug. 20. He had a grand total of seven carries for 26 yards in the preseason and had zero receptions. He held down the fort while rookie Leonard Fournette and T.J. Yeldon dealt with injuries, but both players should be ready to go for Week 1, which meant that Harris was no longer needed.
Last year, Harris totaled 38 carries for 138 yards (3.6 YPC) for the Niners, adding eight catches for 115 yards and a TD. The 49ers re-signed him to a one-year deal in March but released him just a few weeks later.