At first I thought that Mancini started him on the left to give Clichy a bit of a hand and ease him into his debut, but can't see my reasoning there as Barry is also left footed and they've both got similar slow acceleration.
Then he moved over to the right and Silva dropped really deep to start off the attacks from just in front of defence. I know Silva's our playmaker but shouldn't Barry and De Jong be doing that so deep? Then when Yaya started surging forward after Swansea's passing the ball about and not doing anything with it phase Silva came back up the field and balance was restored a bit. Obviously 2nd half was a different story as Silva was still picking it up deep but running the game, couldn't work out what was more effective, I think he waited for the ball to be passed into him deep rather than challenging for it himself and not being available for the ball out of defence/ def mid. but I'm still missing something somewhere. Back to AJ, I think he was told Silva's the man- he can go where he wants. Accommodate him by playing in a complimentry position, i.e. if Silva is on left go to right and vice versa.