Has been picked alongside Inter midfield team-mate Luigi Di Biagio and, like him, could be forced out of Italy's first team.
Trapattoni, though, is known to be a fan of his talents and handed him his first cap in November last year.
Zanetti has already played with Italian sides Venezia, Reggiana, Cagliari, Roma and now Inter.
But only in Milan has he finally begun to make his mark and find his footing.