Nailor (concussion) was listed as a non-participant on Wednesday's estimated practice report.
The wide receiver entered concussion protocol Dec. 10 and missed this past Saturday's 27-24 overtime loss to Cincinnati as a result. Nailor will need to clear the NFL's five-step concussion protocol before he's eligible for game action, and the fact that he's not practicing to begin Week 16 prep doesn't bode well for his chances of gaining clearance for this Sunday's game against Detroit.