AGUERO ....

I don't know how could anyone prefer Sanchez, Pastore or Neymar for Aguero? Out of those three only the brazilian may come close to Aguero, but it will take at least 2 years to settle into european football. Even the great Ronaldo needed them.
Aguero is pretty much one of the few world class players that would make an instant impact in our quality. He is a class above the rest, just like Messi, Ronaldo, Rooney, Villa .... Sanchez is a huge talent, but we are known recently for wasting our youth and obviously developing players is not our best quality the last few years. Aguero is ready.
Imagine: Aguero, Quag, Del Piero, Matri, Toni > 70 goals in seria A . It would have been even better had Trezeguet stayed instead of Toni, but after all it is Marotta and not Moggi.
If we have a Krasic and a LW that can do 5 goals each and a midfield that could score a few ... We will be entertaining to watch at least.