His performances for Mantova in the top flight caught the attention of larger clubs, while Italy's national coach at the time, Edmondo Fabbri, even considered bringing him as a back-up for the 1966 FIFA World Cup, although he ultimately chose to bring Enrico Albertosi, Roberto Anzolin, and Pierluigi Pizzaballa instead. In 1967, Zoff was transferred to Napoli, in exchange for fellow goalkeeper Claudio Bandoni, and a transfer fee of 130 million Lire; he spent five seasons in Naples, making 143 Serie A appearances with the club. During this time, he began to achieve increasing recognition in Italy, also making his International debut with the Italian national side in 1968, and earning a place in Italy's squads at Euro 68 and the 1970 World Cup.