[7] On 16 November, he fractured his arm while on international duty in Elbasan, in Croatia U20's friendly 1–0 victory over Albania, which sidelined him for three months.
[9][10][8] During the tenure of Igor Tudor at the club, Vušković solidified his spot in the starting XI following the COVID-19 suspension of the league and injuries of Ardian Ismajli and Nihad Mujakić.
Despite initial struggles, within the first three months he became a nailed-on starter, and his performances led to the club signing him permanently on 15 March 2022.
[25] On 12 November 2022, Vušković failed a drug test, prompting German Football Association (DFB)'s anti-doping department to launch an investigation.
[26] On 30 March 2023, Vušković was banned by the DFB Sports Court for two years due to EPO doping.
[8] He earned his first call-up to Croatia under-21 team in August 2020, ahead of UEFA Under-21 Euro 2021 qualifiers against Greece and the Czech Republic.
[33] Vušković's great-grandfather Marko made three appearances for Hajduk Split on the liberated territory of Vis during World War II, and later worked as a club executive.
[10] Vušković's grandfather Mario, whom he was named after,[10] attended the Hajduk academy in the 1970s and won a junior league title during Tomislav Ivić's tenure.