Tuhia he haere tonu mo tenei irava - I whakangungu a Bućan i nga whiringa taitamariki tane o te tiima a Serbia (i raro i te 18 tau, i raro i te 19, i raro i te 20). I te 2013 FIBA Europe Under-18 Championship, i mutu a Serbia i te 6 o nga kapa 16. I te 2014 FIBA Europe Under-18 Championship i wikitoria a Serbia i te mētara hiriwa. I te 2015 FIBA Under-19 World Championship
I mutu a Serbia i te 9 o nga kapa 16. I te 2016 FIBA Europe Under-20 Championship, i mutu a Serbia i te 11 o nga kapa 16.