Lavezzi has a buy-out clause set at 31 mil and based on his performance in the CL, especially last night, there will be a line of rich EPL clubs to pay it w/o bothering to negotiate even ... and will also quadruple his salary in the process given Napoli doesn't pay that much even to their star players. With Lavezzi gone, I expect to see Cavani ask for a transfer and Napoli is unlikely to refuse if they can get 40+ mil for him, which they are likely to anyway. Hamsik has the best chance to stay, imo.
After tonight, I can easily see Lavezzi and Cavani go to Chelsea in a package deal with a summer clean-up looming there ... or Man City could well just offer Lavezzi 10 mil/season and beat them to his sigi.