ALLEN PARK — Corey Williams, who had knee surgery on Sept. 25, returned to practice for the first time today (Thursday).

If the veteran defensive tackle doesn’t have a setback, it’s possible he could play on Monday night at Chicago.

 Also, cornerback Alphonso Smith was at practice after signing with the Lions. He’s wearing No. 27, his old number.

 Cliff Avril, DeAndre Levy and Nate Burleson, who all missed Wednesday’s practice, were back in action in the portion of practice open to the media.

 Missing were Kyle Vanden Bosch (rest day) and Louis Delmas (possible rest day). 

  Also out were cornerbacks Jacob Lacey (concussion) and Bill Bentley (shoulder). Both were injured in Sunday’s game.

 (Follow @PaulaPasche on Twitter.)