At this stage of the window it's Chelsea but last seasons champions haven't even started with their squad improvement, arsenal have strengthened, who knows with us(LFC), Man Yoo or the Spuds. Until I see what City do I'll hold off making a solid prediction.
City have already added a few players to strengthen their squad for the coming season:
Fernando - Means more depth in CDM/CM and even the ability to play all three in an area that was a slight problem for us when Toure was injured last season.
Sagna - Finally the back up that has been needed for Zaba.
Willy Caballero - IMO a better back up keeper than Pantillimon.
Mangala / Benatia - one of these guys will come to sure up our lack of depth at CB (looking like Mangala).
There aren't going to be any massively high profile signings but, overall, our squad will be stronger and have more depth.