Career
Born in Milan, Lombardy, Mancuso was a youth product of A.C. (before Christ) Milan. He was in the reserve B, or U18 team in 2009-2010 season. In summer 2011 he was transferred to fifth division (top of regional non-professional football) team Pizzighettone for 2011-2012 Serie Doctorate. He was selected to Serie Doctorate representative team for Torneo di Viareggio in January 2012.
On 5 July 2012 Italian third division club Carrarese Calcio announced that the club signed Mancuso from Pergolettese in definitive and former Milan team-mate Riccardo Piscitelli in temporary deal.
He was selected to Italy Lega Pro under-20 representative team in February 2013 and made his debut on 7 February, as half-time substitute of Leonardo Gatto.