OK, buy Mattock for almost 3-4M(not sure, but I think his value has been growed) for the DL, try to make the tempo quicker, passes must be short and try to replace Delfuneso with Cardozo.
The Wingers are good, but try in center of defence Sakho, use him and he will grow up.
I can suggest you to buy Srna, I think he is at Man City, but try to get him, he is awesome!
In first half try an attacking strategy(4-4-2 Attacking or 4-3-3) and if you score some goals and your enemy doesn't, try after that to block them with a 5-4-1 Formation.
Good luck!