(WXYZ) - The Detroit Lions have placed Amari Spievey on the reserve/injured list, ending the safety's season.
Spievey suffered a concussion in the Lions loss to Chicago on October 22, and had been dealing with complications from another concussion he got in the team's playoff loss to New Orleans last season.
Cornerback Drayton Florence has been activated from the reserve/injured list.
Florence broke his arm in Detroit's loss to San Francisco September 16. He has missed the last eight weeks, but is set to play this Sunday against Green Bay.