Barkley sustained a knee injury in the first half of the Giants' 17-13 defeat to the Bears and did not return. Based on manual tests and initial diagnosis, Barkley suffered an ACL tear, NFL Network Insider Ian Rapoport reported.
Barkley will have an MRI, but the belief is Barkley is out for the season, Rapoport added. Gallman could be a popular pickup this week. He could get a lot of the early-down work with Lewis the change of pace and pass-catching option. But, Gallman was a surprise scratch in Week 2, leaving Lewis as the backup to Barkley this week.