Swift (concussion) is listed as questionable for Thursday's game against the Texans, Tim Twentyman of the Lions' official site reports.
Swift has wrapped up the Lions' Week 12 prep with back-to-back limited practice sessions after being listed as a non-participant Monday. The rookie running back remains in the league's five-step concussion protocol as of Wednesday, but he has a shot to gain full clearance prior to the Thanksgiving Day matchup. If Swift can't go, however, Kerryon Johnson and Adrian Peterson would lead Detroit's backfield.