Bills coach Sean McDermott says QB Josh Allen. Is still in concussion protocol and his status is questionable for Sunday's game vs the Titans... RB Devin Singletary (hamstring) is questionable after missing the past two games while CB Taron Johnson (hamstring) is questionable as well. McDermott said the team wants to see how both react Saturday morning... OT Ty Nsekhe hasn't practiced this week but despite that, the team is confident in playing him if he feels good