Well since the discussion is still going strong, I thought I'd chip in with my two pence.
I don't see Cleverley as shit. People seem to forget that he was first choice to partner Carrick when we won the league the previous season under SAF.
I see him as an above average player. His main qualities are that he has a high work rate, always opens himself up for a pass and likes to pass and move. That makes him suitable for linking up plays, creating space for better players by opening himself up for a pass and then passing the ball back or passing to other better players. He could be a sort of Henderson for us. Great for supporting better players around him. This is also his style of play. He won't be scoring 30 yard screamers all the time, he won't be dribbling past 4 defenders and he definitely won't be making blockbuster tackles. That's not the type of player he is. So the most important question is whether we are using him properly or not.
He'll thrive better if we have more movement about the team, especially in and around the opponent's box. Players moving about and making runs behind defenders. Sadly we lacked that last season and United the last few years tend not to have much dynamism or movement around the box. We've been playing a more static flat 4-4-2 for years. With LvG and his emphasis on triangles, I'm guessing he'll definitely do better than he did last season because there'll be more options for a pass and more movement. Of course I don't expect him to suddenly become a Messi, but I expect him to do well supporting our better players and being a good squad player for the team. He is a supporting player. Not the superstar.
As long as he is happy playing that supporting role, as a squad player, I'd vote to keep him and see what LvG does with him.