I'd actually play him tomorrow as right wing back and give Munoz a rest (in preparation for Thursday). I know he has been absolute turd, but I honestly think if he gets a goal (or even as assist) it will trigger his belief and confidence again. I don't believe it's a system thing. He just needs more game time to come good.
I'm fairly confident he will play tomorrow whether in place of Sarr or Munoz as it's wise to give them a rest. So he'll have another chance to do something!