Zwei Jahre später verließ Giusti Independiente und wechselte zu Unión de Santa Fe, wo er von 1991 bis 1992 seine aktive Laufbahn ausklingen ließ. ###>During his career Giusti also played for Unión de Santa Fe, Argentinos Juniors and Newell's Old Boys, but he had most of his success with Independiente where he captained the team in their most successful era.