Cavani is one of the ONLY FORWARD in the world that I think is worth displacing the 4 we already have, and would gladly allow Tevez or Dzeko to leave if he came. In fact, if we could get a top quality left midfielder/winger too, I would agree to letting them BOTH leave!
However, Mario and Sergio MUST STAY! They BOTH had the speed and clinical finishing required for success in today's Prem, and the last goal of the season is PROOF they can play together! One is a poacher, the other a shooter/target man, and I think they COULD be the best partnership in the world. Throw Cavani in that mix and we may be able to break records with the right service from a world class midfield!