[1] On 19 August 2014 Čupković joined Aries Trikala, signing a one-year deal with the club.

[2] Čupković signed to play in Greece, with Aris of the Greek Basket League and EuroCup, in 2015.

[3] On 1 July 2016 he joined the newly promoted protest to the Greek Basket League Kymis.

[4] In July 2019, Čupković signed for Alba Fehérvár of the Hungarian League.

With Serbia's Under-19 national team, he won the gold medal at the 2007 FIBA Under-19 World Cup.