Tuhia he haere tonu mo tenei waahanga - I whanau mai i Austria, ko Kalajdžić he uri no Serbia. I timata ia mo Austria i te 14 Oketopa 2020 i te whakataetae Nations League ki Romania. I whakakapihia e ia a Michael Gregoritsch i te meneti 90. I te 25 o Poutu-te-rangi 2021, i eke ia i ana whaainga tuatahi e rua mo te ao i roto i te 2 × 2 atu i Scotland i te wa o te tohu mo te Ipu o te Ao FIFA 2022. I whakauruhia a Kalajdžić ki roto i te roopu mo te Euro 2020
, i eke ai ia i te whaainga i te 2<unk>1 i muri i te wa roa ki a Itari i te rauna o te 16.