Mathis' three-game suspension has been lifted and the defensive tackle has returned to the Bills' active roster, Sal Capaccio of WGR Sports Radio 550 Buffalo reported Monday.
The Bills get a three-day roster exemption, giving the team until Thursday to reduce the roster to 53 players. Mathis played six regular-season games for the Bills in 2025, logging 13 tackles (four solo) over 119 defensive snaps.