"The doctor won't clear him unless certain things happen and so far, they haven't," Coach Tom Coughlin said.
G David Diehl did not practice on Friday and is listed as doubtful to play Sunday.
"Right now he is just not able to go out there and practice the way that we would like him to," Coughlin said. "We'll see. Maybe another day will help. We thought today would be a day he would be able to do some work and he actually came out and did some things, but we just didn't put him in our practice."