Davis announced his retirement from the NFL on Thursday, Chris Mason of Masslive.com reports.
Davis (knee) is active ahead of Sunday's game against the Bills.
Davis (knee) was activated from the reserve/PUP list ahead of Sunday's game against the Bills, Mike Reiss of ESPN.com reports.
Davis (knee) was a limited participant in Thursday's practice.
The Patriots re-signed Davis (knee) on Saturday.
Davis (knee) will undergo season-ending surgery in the near future, Ian Rapoport of NFL Network reports.
Davis (knee) was placed on injured reserve Tuesday, Aaron Wilson of ProFootballNetwork.com reports.
Davis (knee) was ruled out for the remainder of Sunday's game against the Browns, he reports.
Davis (illness) will be active Sunday against the Titans.
Davis is questionable for Sunday's game against the Titans due to an illness.