Mattia Liberali is a young footballer born in Lissone in 2007. He starts playing football in Monza's La Dominante team and is noticed by Milan in 2005. In 2024, he wins the U16 Italian championship with Milan's Ignazio Abate and plays in the UEFA Youth League, leading the team to the final against Olympiacos. He plays in the U17 European Championship with Italy and has a great pre-season with Milan's Paulo Fonseca. The Portuguese coach puts him in the starting lineup for the friendly matches against Real Madrid and assists the decisive goal of Chukwueze against Manchester City. He also makes his debut with the big team and continues the season with Milan Futuro in Lega Pro. In the last season, he played for Catanzaro. His first season in Serie B ended with 30 appearances, marked by 4 goals and 4 assists.