5 players who justified their world record transfer fees

#1. Diego Maradona(Napoli)

Diego Maradona

Maradona transferred to Napoli in Italy's Serie A for a world record fee of €13 million in 1984.

At Napoli, Maradona reached the peak of his professional career. Led by Maradona, Napoli won their first ever Serie A Italian Championship in 1986–87. Napoli would win their second league title in 1989–90, and finish runners-up in the league twice, in 1987–88 and 1988–89.

Other honors during the Maradona era at Napoli included the Coppa Italia in 1987, (second place in the Coppa Italia in 1989), the UEFA Cup in 1989 and the Italian Supercup in 1990.

Maradona was the top scorer in Serie A in 1987–88, with 15 goals, and was the all-time leading goalscorer for Napoli, with 115 goals. During his time, he inspired an average Napoli side to victory.