Milićević started playing football at a local club Biaschesi, before joining youth setup of his hometown team Bellinzona.

[7] On 17 August, he scored his a brace in a triumph over Zulte Waregem, which were his first goals for Gent.

[8] He won his first trophy with the club on 21 May 2015, when they were crowned league champions for the first time in their history.

[9] On 16 September, Milićević made his UEFA Champions League debut against Lyon and managed to score a goal.

[18] In June 2016, his request to change sports citizenship from Swiss to Bosnian was approved by FIFA.

[19] Subsequently, he received his first senior call-up in August 2016, for a 2018 FIFA World Cup qualifier against Estonia,[20] and debuted in that game on 6 September.