Didn't work out with him trying to be "the guy" on and off the field. He is better suited to run things behind the scenes.
Critchlow gets to go out on the field, get the spotlight, make plays, win games, get the glory, get the girl, etc.
Meanwhile Detmer Jr. is happy lurking in the shadows and giving 007 his game-winning gadgets on the sideline. He won't get the press, but he's the real reason behind the success.