3-5-2 is temporary IMO. So when we switch back to 4-3-3 we need a top class winger and we need a winger as badly as CB and CM.
CM options of Herrera and Carrick >>> Winger options of Valencia, Young (Not sure where Januzaj will end up)
Saying that we still need a strong DM but Di Maria is a vital signing for us. His pace, dribbling will surely bring the fear factor that was lost since Ronaldo left and Nani was stopped playing.
Re CB, Blackett has been supeb so was Jones. We have added Rojo also, its just that the players are not used to back 3, this is something City found very difficult in Mancini's last season and then they switched to 4 man defense.
CB options of Rojo, Evans, Smalling, Jones, Blackett is good enough, just we need a midfield top protect them. Yesterday Fletcher and Cleverley offered 0 protection to the defense and that's the reason they looked so bad.