With FCSB, Coman won the Cupa României in 2019 and secured another national title in the 2023–24 campaign, during which he was the league's top scorer and named Player of the Season.

[1][2] His first coach, Nicușor Baldovin, stated that after Dinamo won the 2006–07 league championship, Coman was trying to emulate Claudiu Niculescu's free kicks.

[3] Coman was selected from Viitorul Constanța's academy by first-team manager and owner Gheorghe Hagi, and made his professional debut by coming on as a substitute in a 2–0 Liga I win against Astra Giurgiu on 18 March 2015.

[5] Coman was named the Liga I Player of the Month for February 2017 after scoring in wins against Dinamo București (2–1), Pandurii Târgu Jiu (3–0) and ACS Poli Timișoara (5–0), respectively.

[6] In the final fixture against CFR Cluj on 13 May, Coman won the penalty from which Gabriel Iancu netted the only goal of the match, thus being decisive in Viitorul's first national title conquest.

[7] On 26 July 2017, Coman registered his debut in European competitions by coming on as a 66th-minute substitute in a 1–0 home win over APOEL in the third qualifying round of the UEFA Champions League.

[15] Also in the latter competition, Coman entered the pitch after half-time in a 1–5 round of 32 loss to Lazio at the Stadio Olimpico and contributed to Harlem Gnohéré's goal, on 22 February 2018.

[21] Coman spent roughly half of 2020 without playing, initially due to the setbacks caused by the COVID-19 pandemic and then after being injured in a match against TSC Bačka Topola in the Europa League qualifiers in September.

[24] On 28 July 2022, Coman netted for the first time in almost a year in a 4–2 home defeat of Saburtalo Tbilisi counting for the Europa Conference League qualifiers.

[34] In April 2024, Coman converted free kicks in consecutive wins against title contenders Universitatea Craiova (2–0) and CFR Cluj (1–0), and earned his third Gazeta Sporturilor Player of the Month award.

Later that month, FCSB secured its first league title in nine years,[35] and Coman went on to finish the season as top scorer with 18 goals, shared with CFR Cluj's Philip Otele.

[37] He travelled to Doha to undergo a medical on 7 July,[38][39] and one day later signed a three-year contract with the option of another year for the Qatar Stars League club.

[41] On 3 February 2025, Coman was loaned out to Serie A club Cagliari until the end of the season for an undisclosed fee,[42] reported to be €1.5 million and including partial wage coverage.

[57] On 22 April 2024, after admitting that he purchased the fake permit online for €1,500, Coman was handed an 11-month suspended sentence and ordered to perform community service.