He did initially opt out back when it looked like the Big Ten wasn't going to play until spring. He opted back in when the league changed course and returned for games this fall. Big Ten defenses seem like the ones who will suffer the most from that decision.
a LEGACY FULLBACK is one of the most Iowa things ever
My only excuse is that I was writing that right after typing up Nolan Donald's height/weight and I was still flabbergasted by the idea of a 5-9, 194 lb brick shithouse of a receiver.