Fabio Cannavaro

He is considered to be one of the greatest defenders of all time. He spent the majority of his career in Italy. He started his career atNapoli, before spending seven years at Parma, with whom he won two Coppa Italia and the 1999 UEFA Cup. After spells atInternazionale and Juventus, he transferred along with manager Fabio Capello from Juventus to Real Madrid, with whom he won consecutive La Liga titles in 2007 and 2008. After returning to Juventus for one season in 2009–10, he joined Al-Ahli in Dubai, where he retired from football in 2011
                                                        
He is best captain team form italy and best defender for italy.

Gianluigi Buffon

  Gianluigi "Gigi" Buffon  is an Italian professionalgoalkeeper who plays for and captains both Serie A club Juventus and the Italian national team. Buffon is the most capped player in the history of the Italian national team with 154 caps. He is widely considered by players, pundits, and managers to be one of the greatest goalkeepers of all time.

My opinion Buffon is best goalkeeper in Italy and Serie A all of time