The Detroit Free Press quoted a person familiar with the defensive tackle's recovery Wednesday as saying that chances were "slim" Fairley would play against the Cowboys.
"He's working hard to get back on the field, and I think that he's going to play a lot of football for us this year. And when he gets back he'll be ready," Schwartz told WXYT-FM (97.1). "And when he'll be ready, he'll be back. I think I'll just leave it there."
Fairley, the 13th overall pick in April's draft, broke his left foot on Aug. 1. He practiced for the first time on Friday, but did not take part in any team drills.