 He was subsequently purchased by Varese in Serie B, the team with which he gained promotion to Serie A, scoring 6 goals in 37 matches, and making his Serie A debut on 24 September 1967, against Fiorentina, at the age of nineteen.During his first season in Serie A, he scored an impressive 11 goals, 3 of which were scored in Varese's shocking 5–0 win over Juventus on 4 February 1968, a performance which enabled him to be called up to the Italian national side.Due to his precocious performances, he was purchased by Juventus in 1968 for a world record of 650 million Lire at the time, and with the Turin club, he won three Serie A titles, also helping the club to the final of the last edition of the Inter-Cities Fairs Cup, in 1971, a tournament in which he was top scorer, with 10 goals.