The frustration with Cleverley, similar to Anderson I suppose is what we know he can do but just hasn't done enough.
When he first burst onto the scene the way he moved the ball fixed so many issues we were crying about the season before...it was the reason why we attacked maybe twice against Barcelona in that CL final. Simply put, it was about quick movement and quick passing. That goal against City remains one of my favourites of all time regardless of it being in a glorified friendly.
In fact I couldn't believe the disappointment when he first got injured, this was a player who was a 5 game old United player. Whilst he has shown glimpses of his talents at times since that run, he's not really played at that level and that is what we naturally compare to and how we naturally become frustrated. In the last few weeks people are constantly sending my videos of what certain players are capable of doing but either lack the balls to do it now or they're being misguided by a clueless manager (disclaimer - this isn't a direct Moyes blast, it's an option as to why someone like Cleverley is now bland, boring and average).
Of course we 'overrated' him, it's natural. He's been through the ranks since he was in the juniors. You want to see them do well and when they do get into the first team, you believe in them. The realisation of his actual quality will always come, so it's hardly an issue.
I'd like to think that this group of players is simply being mismanaged (well I don't like to think that), because they've shown top tier capabilities in this league in the two seasons before this by being marginally better and worse than City (City were mismanaged last season). Good players don't just become shit, they're human after all. Many of us are unimpressed with Moyes in the media, comments in interviews or even the way he appears on the touchline, many now believe he's out of his depth. That can affect the players (it clearly is) and we can see how tentative, unimaginative and bollockless our players have become.
It's not all down to the manager, you'd hope the players were mentally strong enough to cope with issues but Cleverley has been dramatically worse than last season (where he was inconsistent but never really bad), as have quite a number of established players in the squad so you do wonder...why?