 Complete the following phrase:  Born in Policoro in the Province of Matera, Zaza grew up in Metaponto and began his youth career with Stella Azzurra from Bernalda in 1997. He remained with the organization until 2002, when he moved to the youth academy of Valdera at the age of 11. He remained until 2006, when he was scouted by Serie A side Atalanta, whom he joined shortly after. He remained within the clubs youth team for four years and even began to earn senior call-ups towards the end of the 