Gonzalo Barreto Mastropierro (born 22 January 1992) is a Uruguayan footballer who plays as a striker for Progreso.
His debut came in an away match against Tacuarembó, in which he came off the bench and won a decisive penalty as Danubio claimed a 2–1 victory.
Barreto's talent attracted interest from big clubs and he quickly made the move to Europe.
[1][2] However, Barreto was not able to play for Lazio until he turned 18 in 2010, due to FIFA's restrictions regarding the transfers of minors across different continents.
Uruguay's good finish meant that they qualified for the 2009 FIFA U-17 World Cup, held in Nigeria.