The San Francisco 49ers announced Tuesday how they will replace running back Christian McCaffrey.

In a series of roster moves, the 49ers have placed McCaffrey on IR, RB claimed Israel Abanikanda said goodbye to the New York Jets and signed wide receiver Ronnie Bell to the practice squad.

McCaffrey suffered a season-ending PCL injury in his knee during the 49ers’ loss to the Buffalo Bills in Week 13. Head coach Kyle Shanahan indicated Monday that McCaffrey would go on IR with just five games left and McCaffrey would likely be out for at least six weeks.

While Abanikanda will replace him on the roster, rookie RB Isaac Guerendo is expected to carry the lion’s share of the workload in the backfield. Abanikanda could work his way into the backup RB role depending on what the team thinks about RB Patrick Taylor, who is on the practice squad and spent the first nine weeks on the active roster before McCaffrey returned.

Abanikanda was a fifth-round pick of the Jets in the 2023 draft. As a rookie, he played in six games and rushed for 70 yards on 22 carries.

Bell was waived by the 49ers on the Friday before Week 13. The 2023 seventh-round pick gives San Francisco a reliable internal option if they need depth at WR or on special teams.

We may see more roster moves in the backfield as RB Jordan Mason may also hit IR after suffering a high ankle sprain in Week 13.