The Colts signed Montgomery to a contract Sunday.
Montgomery was not tendered by the Colts in early March but has found his way back to the team. Fellow wide receiver Liam Clifford was waived in a corresponding move to make room for the familiar face. The team is trying out a variety of players at the position as Alec Pierce (ankle), Josh Downs (groin) and Laquon Treadwell (hamstring) remain injured.