 In 1990, he moved to Cagliari, scoring 17 goals in 50 appearances, playing mostly on the left rather than in his more habitual central position.In 1992 Napoli signed him and Fonseca managed a more impressive strike rate, scoring 31 goals in two seasons in Naples, including 5 goals in a 5–1 win against Valencia in the first knock-out round of the UEFA Cup on 16 September 1992.His form and performances drew attention from Roma, who promptly signed him in 1994.