In the 1990 summer, following Milan's signing of Sebastiano Rossi, 32-year-old Galli left, going on to represent S.S.C. Napoli and appearing in an average of 33 league games during his three-year spell, starting by winning the Italian Supercup, 5–1 against Juventus. In 1993, he played as the starting keeper for Torino Calcio for a single season, reaching the semi-finals of the Coppa Italia, and the quarter-finals of the Cup Winners' Cup, despite a disappointing mid-table finish. He finished his stint in the top division at the end of the 1994–95 season, after being named backup goalkeeper behind Luca Bucci at AC Parma, who won the UEFA Cup that season, and reached the Coppa Italia final, also placing third in Serie A.