 In 1957, Mokuna left the Congo for Belgium to play for KAA Gent ("La Gantoise") where he was twice the team's top goalscorer (1959 and 1960) and became "a club icon".At the time, it was widely assumed that Mokuna was the first African to play for a Belgian team and the first Congolese player in a European club.He certainly pre-empted the so-called "Belgicains" who arrived from the Congo to play at Belgian clubs after 1959.