Im not sure what the rave is about Jovetic is considering how much his worth. Id rather put down an extra 5-10 mil on top of what we are supposedly offering for Jovetic and bid for Cavani.
And there is the issue. Cavani in all likelihood will cost at least 10-15 million more in fees/player exchanges. And napoli is a team that is not in a pressure situation to sell, especially considering that Cavani has given several indications that he would like to stay.
Fiorentina's situation is vastly different. They have no European competitions this year, and the prospects certainly don't look bright for them in the near future.
Look at it this way, and this might be a totally myopic view on my part, since I am an unabashed Jovetic fanboy, and would gladly carry that flag on this forum if he were to come.
Would you rather have potentially the next Trez in Cavani, or potentially the next Del Piero in Jovetic?