Marrone returned to Juventus on 30 June 2011 upon the expiration of the loan deal. He was to be loaned out again until Conte, who had been recently appointed new Juventus manager, blocked the move and included the youngster in his plans for the upcoming season. He made his first start for the club in the Coppa Italia fixture against Bologna and first appearance of the season away at Lecce in January. His first assist came in an away victory against Atalanta. He started his first Serie A match and scored his first top-flight goal in the return leg against the club from Bergamo on the last matchday of the season, as Juventus won the "Scudetto" undefeated.