The leader must be able to secure basic 11ada (no injuries to be moderate, etc etc), be chronic in the team to trust him and his teammates have a winning mentality.
We can not know everything about the future.
Santon and worse every year, the only MAYBE could replace Zanetti is well Ranocchia ,is young,Italian, and until you stop Zanetti (2013) will know each teammate they will be good? I and Oldest the time (although stay) because they have stopped \ leave "Cordoba, Materazzi, Milito, Motta, Lucio, Chivu, Samuel, Maicon,Pandev etc etc, but do not forget players from Primavera and other such Coutinio.
" I Say Ranocchia "