One thing I'd say in Mancini's defence is that we probably won't see us play more as a team until next season. We've tried to build a team from scratch and that doesn't work. Next season we'll have a more settled squad and key players like Kolarov, Boateng, Yaya Toure & Dzeko should have adapted better to the Premier League. We won't have 5 or 6 new players coming in to disrupt everything.
However, I do have concerns about our midfield. Players like Barry & Milner, who should be at home in this league, just aren't adding value. They're never a threat going forward and this was shown in the Derby when someone got to the by-line and put a great ball towards the penalty spot but there was no one there to knock it in. That's where Milner, Barry or even a player like De Jong (although he wasn't playing) should have been. But neither of them was in the right place. I'd sell them both and get Krancjar from Spurs, who is much more of a threat from that position.