[7][8] However, due to COVID-19 pandemic travel restrictions he never manage to join the Hiroshima Dragonflies and left the team prior his debut.

[12] On 11 November 2023, Birčević signed with Lietkabelis Panevėžys of the Lithuanian Basketball League (LKL) for the rest of the season.

Birčević also represented Serbia at the 2016 Summer Olympics where they won the silver medal, after losing to the United States in the final game with 96–66.

[14] Birčević also represented Serbia at the EuroBasket 2017 where they won the silver medal, after losing in the final game to Slovenia.

[15] At the 2019 FIBA Basketball World Cup, the national team of Serbia was dubbed as favorite to win the trophy,[16] but was eventually upset in the quarterfinals by Argentina.