Minnesota Vikings coach Mike Zimmer has left open the possibility of some preseason playing time for running back Adrian Peterson.

Zimmer said Monday he has not decided whether or not to put Peterson on the field in an exhibition game for the first time in five years. Zimmer said he’d let Peterson play “if he wants to,” but the coach and the player have not discussed the situation recently.

The Vikings play Thursday at Seattle. The natural opportunity for a Peterson cameo would be against San Diego Aug. 28, the team’s first game at U.S. Bank Stadium. Zimmer said after last season that he “probably” made a mistake by not playing Peterson in any exhibitions, when asked about his role in the passing game.