Novellino was born at Montemarano, province of Avellino. After spending his childhood in São Paulo, Brazil, he later returned to Italy, and started his professional career with Torino, then obtaining his major successes with Perugia and A.C. Milan, and being nicknamed "Monzon" (after an Argentine boxer) due to both his physical resemblance to him and his determination on the pitch. Novellino announced his retirement in 1987. In his first season with Milan, he helped the club to their tenth Serie A title in 1979. When the club was relegated following their involvement in the Totonero 1980 match-fixing scandal, he remained with the team and helped Milan win the Serie B title and immediately obtain promotion back to Serie A; during the 1980–81 Serie B season, he notably scored the goal against Monza which secured promotion for the club.