There's still a long list of CB's that could leave:
Jorge Andrade
Daniele Bonera
Nicolas Burdisso
Fabio Cannavaro (too old)
Ricardo Carvalho
Marcello Castellini (plays RB now)
Giorgio Chiellini (Young Serie B player)
Christian Chivu (will stay at Roma)
Ivan Ramiro Cordoba
Cribari...