But he does play for the U21s and not the first team...for absolutely no reason...every single week.
How do you know it's for no reason?
Maybe just maybe he's getting back to full fitness, so he doesn't breakdown yet again when he makes his 2nd or 3rd comeback game with the first team!
Find it annoying people state such issues as fact, when they are not privy to what the Manager thinks about certain players...