Nice Maupay began his youth career at US Valbonne at age six in 2002, before moving into the
Nice academy in 2007. He progressed through the ranks into the reserve team at the beginning of the 2012–13 season, scoring four goals in three early-season matches before receiving his maiden call into the first team squad on 15 September 2012, At age 16 years and 32 days, Maupay made his professional debut as an injury-time substitute for
Éric Bauthéac during the 3–2 win. He was a regular inclusion in the first team squad from October 2012 through to March 2013 and signed a new two-and-a-half-year contract in January 2013. Maupay made 19 appearances and scored four goals during the
2012–13 season and when making his Ligue 1 debut and scoring his first Ligue 1 goal, His first Ligue 1 goal came in the stoppage time of a 3–2 win over
Evian, aged 16 years and 123 days, to be the youngest scorer in the 21st century. Despite his breakthrough into the first team squad during the 2012–13 season and after recovering from injury, Maupay was out of favour with manager
Claude Puel during
2013–14 and
2014–15 seasons, which ultimately caused his departure in August 2015. He made 53 appearances and scored nine goals during three seasons as a first team player at the
Allianz Riviera. He had a good start to the
2016–17 season, scoring 10 goals in his opening 21 matches, winning the August 2016
UNFP Ligue 2 Player of the Month award and receiving nominations in September, October and December. Injuries in December 2016 and February 2017 disrupted Maupay's good form and he finished the season with 12 goals in 31 appearances.
Brentford On 14 July 2017, Maupay moved to
England to join
Championship club
Brentford on a four-year contract for an undisclosed fee, reported to be £1.6 million. The club's France scout Brendan MacFarlane, who would also go on to identify Saïd Benrahma, Julian Jeanvier and Bryan Mbeumo, played a key role in the identification of the player as a target. He was deployed as a
forward and scored three goals in his opening six appearances for the club, with his first goal coming in a 4–3 defeat to
Nottingham Forest on 12 August 2017. He broke into the starting lineup during the protracted transfer of first choice forward
Lasse Vibe away from
Griffin Park in January 2018 and he assumed the role full time after Vibe's departure early the following month. Maupay showed improved goalscoring form between mid-January and mid-April, with a run of seven goals in 15 matches. Maupay had an excellent start to the
2018–19 season and scored 13 goals in his first 17 league appearances. Maupay won the
EFL Player of the Year award at the 2019 London Football Awards, after he scored 18 goals in 30 appearances by the end of January 2019. He finished a mid-table season with 28 goals in 49 appearances and was voted the Brentford's Supporters' and Players'
Player of the Year.
Brighton & Hove Albion 2019–20 season: Debut season On 5 August 2019, Maupay moved to
Premier League club
Brighton & Hove Albion on undisclosed terms, for a fee reported to be in the region of £20 million on a four-year deal. Maupay scored on his debut in the opening match of the
2019–20 season, Brighton's third in a 3–0 away win over
Watford. On 14 September, Maupay opened the scoreline in a 1–1 draw against
Burnley, claiming his first home goal for the Sussex club. Maupay scored his 10th goal of the season in a 1–1 away draw against
Southampton on 16 July 2020, helping Brighton earn an important point towards safety.
2020–21 season Maupay opened his scoring tally on the
second game of the season scoring two inside the first seven minutes in an eventual 3–0 away win over
Newcastle United. On 26 September,
Manchester United were given a penalty after the final whistle due to
VAR deeming Maupay to have committed handball right at the end.
Bruno Fernandes converted the penalty with United winning the match 3–2; Maupay also scored a penalty himself earlier on in the game in
Panenka style. Maupay was sent off after the full time whistle on 9 May in a 2–1 away loss at
Wolverhampton Wanderers for confronting the referee,
Jonathan Moss. As a result, Maupay missed the last three games of the season.
2021–22 season Maupay equalised against
Burnley on 14 August in the opening game of the
2021–22 season, a 2–1 away win on Maupay's 25th birthday. On 27 September, away at
rivals Crystal Palace, Maupay scored an added-time equaliser in a 1–1 draw. After seven games without scoring, Maupay scored his fifth goal of the season on 1 December away at
West Ham United, an acrobatic overhead kick in the 89th minute to earn a 1–1 draw. Maupay's opener in the 2–0 away victory over
Watford on 12 February 2022 was his 26th Premier League goal for the Albion, equalling
Glenn Murray's club record. Maupay's form was under question during the second half of the season with inconsistency and a lengthy goal drought. He was dropped for fixtures against Arsenal and
Tottenham Hotspur after missing a penalty in the 0–0 home draw against
Norwich City on 2 April.
Graham Potter defended the Frenchman saying "he's been fantastic", calling Maupay "a fantastic team player" who's been "really professional in training." After being left on the bench for both North London fixtures he returned to the starting line-up on 24 April, playing 85 minutes of the 2–2 home draw against Southampton.
Everton Maupay signed for Premier League club
Everton on 26 August 2022 on a three-year contract with an option of a further year for an undisclosed fee. He made his debut on 3 September, playing the whole match of the goalless
Merseyside derby draw with
Liverpool at
Goodison Park. On 9 June 2025, Everton announced that Maupay would be leaving the club upon the conclusion of the
2024–25 season.
Loan return to Brentford On 1 September 2023, Brentford announced that they had re-signed Maupay on a season-long loan deal. He netted his first goal in 14 months on 4 November 2023, as he opened the scoring in a 3–2 home win against West Ham United.
Loan to Marseille On 30 August 2024,
Olympique de Marseille confirmed Maupay had signed on a loan deal lasting until the end of the season with an obligation to buy for £6 million, rising to £10 million if certain obligations are met. On 2 January 2025 whilst on loan at Marseille from Everton, Maupay typed on his X account "Whenever I'm having a bad day, I just check the Everton score and smile". This came after Everton were beaten 2-0 by Nottingham Forest. This post caused outrage amongst Everton supporters but the club declined to comment. ==International career==