Shocking all these years United have not strengthened in midfield, every window you expect them to but they never do. Carrick is decent but will always be exposed against a Barcelona, Cleverley is a rookie playing in his first full season, i do like the guy though and his potential, i like the look of Powell too from the bits i've seen, but they defiantly need more experience and quality in there.
Saying that their attack is deadly and i do fancy them to beat Madrid.
*Edit* Reading back why do i keep forgetting about Kagawa? Awesome player, midfield 3 of Carrick/Kagawa/Cleverley is not too bad on reflection, i've noticed they started playing the diamond more this season in the Champions League which is a more keeping possession based formation, not bad players to do that. Not sure if that formation would work against Madrid though, for United win that they need to play to their strengths and use their wingers and let Rooney and RvP do the rest.