Young players that don't play regular football don't succeed. This club has been horrible with young players for years. We keep talented lads in the reserves until they're in their twenties and act surprised when they don't have career's as expected. We sold a player like Tom Thorpe - who was talented, no doubt - in his twenties having played less than 15 professional football games. A player like him should have been out on loan years prior to that.
Januzaj's apparent poor attitude has been well documented, and that he's fecking around is his mistake, but he hasn't been developed particularly well either. He wasn't playing regularly during the first season under Van Gaal, then having started the first few games of last season (scoring against Villa), he was inexplicably sent out on loan to Germany. I still can't get my head around that move.
Januzaj's talent is clear. He can do things with the ball that many footballers simply cannot, and he's more than young enough to turn it around. A move away might be the best thing for him at this point, because moping about at United with a bad attitude will be a waste of everybody's time.
I still firmly believe he's got all of the game to develop into one of the best attacking midfielders around. A fresh start and a kick up the arse might just be the best thing for him.