I think describing him as 'developing nicely' is really pushing the definition of that term. He was 21 when he joined, he's 24 now. He played 100 games in those first two seasons and I honestly don't see him as being significantly better now than he was after he first signed. A marginal improvement (if that's even what has happened, which i personally don't see) should be the absolute bare minimum expectation. Arguably, given the expected trajectory of a footballer between those ages, you could say he's fallen below the expected upward curve. Just my take, and i don't exactly watch every utd game, or pay particular attention to him when i do watch. He does enough defensively that i would certainly not call him a failed signing, but Utd thrive when they get players who go above and beyond normal standards, who strive to become better and better at all aspects of the game. I don't see that with him.