Claudio for ages since they were little kids, and Criscito 3 years in primavera/berretti plus Azzurrini. Yeah quite assuredly his buddies, based on what he said of them being close (remember when Criscito left and how sorry he was etc). Though one can just be teammates and not friends ofcourse.
Bocchetti was a newcomer to the their Azzurrini team, so not someone he played with for a long time.