Mezue ahịrịokwu na-esonụ: Na 7 June 2019, a họpụtara Ivanušec na ndị otu Nenad Gračan nke mmadụ 23 maka UEFA Under-21 Euro 2019. O mere ihe ngosi abụọ na asọmpi ahụ, na 1 <unk> 0 meriri France na 3 <unk> 3 meriri England, ebe Croatia kwụsịrị nke ikpeazụ na otu ha. Na egwuregwu nke abụọ, o nyere Josip Brekalo aka maka goolu nke atọ nke Croatia. Na 9 Machị 2021, a họpụtara ya ọzọ maka UEFA Under-21 Euro 2021, ebe a kpọrọ aha ya na ndị otu Igor Bišćan nke mmadụ iri abụọ na atọ maka otu egwuregwu nke asọmpi ahụ. Ọ pụtara ìhè dịka otu n'ime ndị egwuregwu kachasị mma na otu ahụ, ka Croatia na-aga n'ihu na nkeji iri na ise. N'egwuregwu ikpeazụ nke otu, mmeri 2-1 nye England na Machị 31, Ivanušec mere egwuregwu nke iri abụọ na asaa ya maka ndị otu ahụ, wee bụrụ onye ọkpụkpọ kachasị mma na akụkọ ntolite. Na Mee 17, akpọrọ ya na ndị otu egwuregwu 23 nke Bišćan maka oge nkwụsị nke asọmpi ahụ, yana ndị otu egwuregwu 26 nke Zlatko Dalić maka
UEFA Euro 2020. Na 7 June, edepụtara ya na UEFA Under-21 Euro 2021 Squad of the Tournament.