Ingram, who won the Heisman last year after his sophomore season, missed the Crimson Tide's season-opening 48-3 win over San Jose State because of a knee injury.
He injured his left knee during practice Aug. 30 and underwent arthroscopic surgery the following day. Alabama officials now say he is more likely to make his 2010 debut Sept. 18 against Duke rather than Saturday versus Penn State.
"He's probably not going to play this week," Alabama Coach Nick Saban said Wednesday. "He hasn't had any swelling or any problems, so if he can continue to progress, I would say he's probably not going to be ready to play this week.
"He might be ready by the game but he won't be able to practice enough to be ready. But I think after that, we have a chance to get him back if he continues to progress."
Ingram was voted the Heisman Trophy after rushing for a school-record 1,658 yards last season in helping Alabama to a 14-0 record and the Bowl Championship Series title.