I'd start -
Hart
Richards-Kompany-Lescott-Clichy
Milner-DeJong-Barry
Nasri-Aguero-Silva
Subs - Pantillimon, Zabaleta, Savic, Kolarov, Hargreaves, Johnson, Dzeko
It looks to me like Mancini is giving Nasri, Aguero and Silva free roles but sometimes the 3 of them can get caught up in the same areas of the pitch and seem to trip up over each other. They need to work as a 3 and interchange, if the ball is to the left the central man and left sider work together and vice versa down the right side. Have DeJong sat and Milner and Barry working box to box in tandem, helping support the attack and if it gets crowded both men are capable of scoring long range goals. As long as they hit the target our 3 attackers are quick enough to get in on the follow up.