Lučić started playing basketball at senior level with the Serbian team Superfund in 2006, where he stayed until 2008.
Partizan
After two years at Superfund, Lučić was signed by Partizan before the start of the 2008–09 season. In his initial two years at Partizan, Lučić played very little under head coach Duško Vujošević. In 2010–11, under new head coach Vlada Jovanović, Lučić received more playing time, alternating between small forward and power forward throughout the season. He improved his statistics, nearly doubling them in the Euroleague, averaging 5.8 points and 2.4 rebounds. Before the start of 2012–13 season, he became the next team captain, shortly after longtime captain Petar Božić left the team over the summer.[1] He led his team over 2012–13 Euroleague season with 13.7 points and 4.8 rebounds over 10 games, but eventually Partizan didn't proceed to the next round of the competition.[2] With Partizan, he won five consecutive Serbian League championships, four straight ABA Leagues and Serbian Cups.
Valencia
On 24 June 2013, Lučić signed a two-year contract with an option for a third year with Spanish club Valencia Basket.[3][4] In his first season abroad, he had trouble with his back and left foot all over the season. He eventually had a foot surgery in January which sidelined him off the court until March.[5][6] In his first EuroCup season, he averaged just 3.8 points and 2.3 rebounds over 8 games. Valencia eventually won the Eurocup, beating UNICS Kazan in the final.[7][8]
On 17 June 2015, Valencia Basket extended the contract with him for one more season.[9]
Bayern Munich
On 26 July 2016, Lučić signed a two-year contract with German club Bayern Munich.[10] On 9 June 2017, Lučić signed a two-year contract extension with Bayern.[11] He extended his contract until 2025 on 8 February 2022.[12]
Lučić also represented Serbia at the EuroBasket 2017 where they won the silver medal, after losing in the final game to Slovenia.[14] Over 9 tournament games, he averaged 8.9 points, 5.6 rebounds and 1.1 assists per game.