Rubuta ci gaba don wannan sakin layi - Bućan ya horar da zaɓaɓɓun matasa na ƙungiyar ƙwallon ƙafa ta Serbia (ƙasa da shekaru 18, ƙasa da 19, ƙasa da 20). A 2013 FIBA Turai Under-18 Championship, Serbia ta gama 6th tsakanin kungiyoyi 16. A 2014 FIBA Turai Under-18 Championship Serbia ta lashe lambar azurfa. A Gasar Cin Kofin Duniya ta FIBA ta 2015
, Serbia ta gama na 9 a cikin kungiyoyi 16. A Gasar FIBA ta Turai ta 2016 a karkashin 20, Serbia ta kammala na 11 a tsakanin kungiyoyi 16.