I bought otamendi,neymar and sold dzeko in my game.I kept tevez and his doing really good for me...Fellaini is great player for DM and pretty cheap too(for Man City).Anyway hope i helped.
P.S. Silva will be injured at some point definitely,keep that in mind...
Kolarov had to be trained for 2 and a half seasons to stop doing that...thats all i have to say...anyway i think the shout "work ball into box" helps a little but im not sure...