I am goin to spring to the defence of Mancio on this one.
We may not have conceded many goals in the league because most teams didn't bother attacking us. They parked the bus and hoped to nick a goal. Most weren't good enough to do so and that's why we have a good defensive record in the premier league.
In europe however it was a different ball game. we were up against more clinical forwards and we also didn't dominate possession in midfield like we do in the league. Barry, Milner etc not quite so effective in this arena.
So as far as I am concerned get RVP if he wants to come and we offload a striker,but he is not the key. If Tevez and Edin want to stay we have a fearsome front 4 as it is.
To improve in europe we need a centre back who can play football. pique for example. Vince is great but he often hoofs it long and inacurately, while Joleon, well its just not his thing.
In midfield we do need someone a bit more cultured.
So if we signed Pique and Sneijder for example i think we'd be almost there as far as Europe is concerned.
Hart
Richards Kompany Pique Clichy
de Jong
Snejder Yaya Silva
Aguero Tevez