Andre Carter is wearing a protective boot on his injured left ankle and he watched Wednesday's 49ers practice sessions from the sidelines. Though Carter is listed as questionable for Sunday's game against the Colts in Indianapolis - meaning there's a 50 percent chance he'll play - the rookie defensive end indicated he may not be available.
"I'm just going day to day," Carter said Wednesday. "It's a turf game. It's one of those things you have to look into, especially with injuries all around. I think the main thing is, we have a long season, and I don't want to put myself or the defense in a position where, if I played this week and I'm not quite ready, I could be out a few more weeks and that could hurt the team."
Coach Steve Mariucci said the team would have Carter take the boot off on Friday and reassess the injury then. If Carter is unable to go, third-year player Chike Okeafor would take his place in the lineup. Okeafor has been seeing playing time behind starting ends Carter and John Engelberger.
"I've been playing more and more every week regardless," Okeafor said. "But this situation is definitely because of injury. You just still have to prepare (to play) like you always do."
In other injury news: --- Star receiver Terrell Owens was held out of practice Wednesday. He is bothered by soreness in his left ankle and left knee. "The ankle is more of a problem than the knee," Mariucci said. Owens will attempt to practice Thursday and is expected to be ready for Sunday's game.
--- Defensive tackle Reggie McGrew is expected to return to action this week after missing the past four games with a sprained right ankle. McGrew hasn't played since being injured during San Francisco's 37-31 overtime victory at Atlanta on Oct. 14. -
-- Owens, McGrew, running back Kevin Barlow (left quad) and quarterback Jeff Garcia (right elbow/right knee) all are listed as probable to play against the Colts.