We are either buying Osvaldo, or getting one of Immobile and Gabbiadini IMO... I don't think we are buying a different striker because we need strikers in our team that have been proven in Serie A...
Strikers aren't really an issue for us, we score a lot of goals and are overflowing with options.
Quagliarella and Vucinic are sure to be sold this summer. Say we get €15m for the pair. That goes on Osvaldo. We bring back Immobile or Gabbiadini half for another €8m-€10m or so. That is our total striker spend, that last number. We could make more than that back by selling the halves of others we own (Immobile/Gabbiadini, Boakye, Zaza, Marrone, whoever, the list is huge). We might spend that money to bring Berardi in fully, or use it elsewhere, other wingers.
3-5-2: Tevez, Llorente, Osvaldo, Immobile, Giovinco.
Possibly with a shift to a front 3, adding Berardi/Nani and Cerci, 4 natural strikers, 3 natural wide forwards.