Receiver Alshon Jeffery (hamstring) and linebacker Shea McClellin (concussion) are doubtful to face the Tampa Bay Buccaneers on Sunday.

Jeffery and McClellin both missed their third consecutive practice on Friday.

Jeffery has played in just nine games this season because of a variety of injuries.

In other injury news, safety Adrian Amos (shoulder), cornerback Bryce Callahan (quadriceps), linebacker Pernell McPhee (knee) cornerback Tracy Porter (ankle), and receiver Eddie Royal (knee) are questionable for Week 16.

Bucs safety Chris Conte is doubtful with a knee injury. The former Bears defensive back had limited participation in Friday’s practice.

The Bears are scheduled to conduct a walk-through practice on Saturday before departing for Florida.