I think most of us still aren't aware just how unattractive serie A became, especially to players who play for Barca, Real or the big EPL teams. Even super rich teams from unattractive leagues (PSG) would find it seriously hard to get a star player from Real, Barca, Arsenal, City, United, Chelsea, even Liverpool.
Imo it's pretty obvious that our most realistic chance for signing good/great players is if they are youngish and based in serie A. Players like Lavezzi, Sanchez and Pastore last year, Cavani and Jovetic. Even here we will find it extremely hard if other big and richer teams show interest, as it was the case with Sanchez, Pastore and Lavezzi, or will probably be the case with Cavani and from next year with Jovetic.
That is why I find it silly when people start saying how we don't need Jovetic, we need a top CF like RVP, Dzeko, Torres and Higuain etc. Yeah, we do need those players, but good luck getting them. When a chance occurs to buy someone who is really good and has all the predispositions to become great, you simply buy him even if the position is covered right now. That's what we did with Isla and we'll be crazy if we don't do it with Jo-Jo, assuming that we stand a chance in buying him. Our only chance to get great players, especially strikers, is either to produce them, to buy them when they are really young or to get them from serie A.