The Lions will try to take another step toward a NFC North title when they host the Bears on Sunday, but they may have to do it without starting center Travis Swanson.
Swanson was out of practice on Wednesday because of a concussion, which means he’ll need to proceed through the league’s concussion protocol in the next few days if he’s going to be cleared to play against Chicago.
It’s not clear when Swanson suffered the injury or reported symptoms. He played every snap for the Lions in their Week 13 victory over the Saints and has started all 12 games for Detroit this season.
Rookie Graham Glasgow competed with Swanson for the job over the summer and would be the likeliest replacement if Swanson can’t go. Glasgow has been starting at left guard, so moving over a spot would probably mean a return to the lineup for 2015 first-round pick Laken Tomlinson.