He represented Yugoslavia at the 1954 FIFA World Cup.
Mantula played club football in Yugoslavia with FK Sarajevo, Dinamo Zagreb and NK Zagreb and in Switzerland with Servette and Sion.
[3] Mantula made his debut and played his only game for Yugoslavia in a September 1954 friendly match away against Wales.
[4] Mantula also coached in Switzerland, managing the club sides Sion, Zürich and Neuchâtel Xamax.
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