Ku sii wad qodobkan - Bućan wuxuu tababari jiray xulashada ragga dhalinyarada ee xulka qaranka Serbia (ka yar 18, ka yar 19, ka yar 20). 2013 FIBA Europe Under-18 Championship, Serbia waxay ku dhameysatay kaalinta 6-aad 16 kooxood. Horyaalka FIBA Europe Under-18 ee 2014, Serbia waxay ku guuleysatay billad qalin ah. Koobka Adduunka ee FIBA ee 2015
, Serbia waxay ku dhameysatay kaalinta 9aad 16 kooxood. Horyaalka FIBA Europe Under-20 ee 2016, Serbia waxay ku dhameysatay kaalinta 11-aad 16 kooxood.