To tell you the truth, I am with starting Zlatan against Milan. I can see the point of it.
We did not want to push forward alot. We wanted a draw. The game was not that important for us. Zlatan is currenlty of form, I think it is more physically than mentally. Even Capello said that. On an interview he mentioned that when a player strains his knee he will feel uncomfortable playing for a while. I feel this is what Zlatan's going through at the moment.
In my opinion, at the current form, DP should start Arsenal but Zlatan should play both Livorno and Roma matches. Not necessary 90 min, but he has to make an appearace to gain his streangth back.
But I do repeat again. DP IS A MUST FOR ARSENAL GAME.