Maurer isn't seeing the bigger picture or the opportunity he has here. He's only seeing the "me" and "right now" point of view. That's not good for a teammate or leader. He trained to play, he wants to, I dont blame him for being let-down or irritated. He needs to grow-up some and look at options that give him the best opportunity for future personal success.
In the bigger picture, he could learn from Heupel and Halzle, and train to be a coach. His future is probably not a pro player, but he could adjust his attitude and goals and become a heckuva coach.
Imo anyway.