In 1975, he was signed by S.S.C. Napoli for a then world record two billion Lira (£1.2 million), becoming football's first million pound player. With the club, he continued his success, becoming a popular figure with the fans, as he won his third Coppa Italia title during the 1975–76 season, also finishing as the Coppa Italia top scorer, with 12 goals, during the 1977–78 season. He also helped the club to win the Anglo-Italian League Cup in 1976, the second time he had won this title.