Rubuta ci gaba don wannan sakin layi - A ranar 7 ga Yuni 2019, an zaɓi Ivanušec a cikin 'yan wasa 23 na Nenad Gračan don UEFA Under-21 Euro 2019. Ya buga wasanni biyu a gasar, a cikin 1<unk>0 da aka doke Faransa da 3<unk>3 da Ingila, yayin da Croatia ta gama karshe a rukuninsu. A wasan na biyu, ya ba Josip Brekalo taimako don burin Croatia na uku. A ranar 9 ga Maris, 2021, an sake zaɓar shi don UEFA Under-21 Euro 2021, an sanya shi cikin ƙungiyar Igor Bišćan ta mutum 23 don rukunin rukuni na gasar. Ya yi fice a matsayin daya daga cikin 'yan wasa mafi kyau a cikin tawagar, yayin da Croatia ta ci gaba zuwa wasan kusa da na karshe. A wasan karshe na rukuni, rashin nasara 2<unk>1 ga Ingila a ranar 31 ga Maris, Ivanušec ya buga wasan sa na 27 ga kungiyar, ya zama dan wasan da ya fi kowa yawan wasa a tarihi. A ranar 17 ga Mayu, an kira shi a cikin 'yan wasan Bišćan 23 don wasan tsere na gasar, da kuma' yan wasan 26 na Zlatko Dalić don UEFA Euro 2020
Ka yi haƙuri. A ranar 7 ga Yuni, an lissafa shi a cikin UEFA Under-21 Euro 2021 Squad na Gasar.