Due to his dynamism, tenacity, work-rate, and technique, he was capable of helping his team both offensively and defensively as a fullback on the flank.

At international level, he represented Italy at the 1994 FIFA World Cup, where they reached the final, and at UEFA Euro 1996.

During the 1991–92 season, Mussi led Torino to a third-place finish in Serie A, and he also helped his club to reach the UEFA Cup final, where they were defeated by Ajax on aggregate.

[1][2] At international level, Mussi won 11 caps for the Italy national football team between 1993 and 1996 under manager Sacchi.

He made 3 appearances during the tournament, including one in the final defeat, picking up an injury during the match; he was replaced by Luigi Apolloni.