ALLEN PARK — Titus Young, who was sent home a week ago due to behavioral issues, was not at practice today (Tuesday). 

 It’s uncertain if he is still with the team. Coach Jim Schwartz should address this following practice.

 Three starting offensive linemen — Jeff Backus (hamstring), Rob Sims and Gosder Cherilus didn’t practice. Sims and Cherilus are new to the injury list.

 Also missing were Louis Delmas who started on Thanksgiving but couldn’t finish the game due to swelling in his knee.

 Defensive end Cliff Avril, who has been dealing with a back issue for weeks, did not practice. 

 Neither did defensive tackle Corey Williams.

 The Lions (4-7) are getting an early start on preparations to play the Indianapolis Colts (7-4) on Sunday at Ford Field.

(Paula Pasche covers the Lions. Follow her on Twitter @PaulaPasche. Read her Lions Lowdown blog at oplions.blogspot.com.)