[7] He signed his first four-year professional contract with OFK Beograd ending of 2012,[8] after he spent the first half of 2012–13 season as a loaned player with Serbian League Belgrade side Dorćol.

[9] At the beginning of 2014, Čupić was loaned to Dinamo Pančevo,[10] but returned in OFK Beograd after a week and spent the whole season as a reserve choice.

[14] After Bogdan Planić's injury, coach Dejan Đurđević gave a captain armband to Čupić several fixtures before the end of season.

[12] Čupić also started new season with club, but missed opening matches and moved on six-month loan[16] to OFK Bačka in last day of the summer transfer window 2016.

Coach of Serbia national under-23 football team, Milan Rastavac invited him to squad for a friendly match against Qatar in December 2015.