On 17 December 2019, Brett joined Birmingham Legion FC.[7] Brett made his debut for Birmingham on 15 July 2020 during a 3-0 victory over Memphis 901 FC.[8] Brett would go on to score his first and second goals for Birmingham on 5 August 2020 during a 4-1 victory over Charlotte Independence.[9] Brett would finish the 2020 season as Birmingham's leading scorer with 9 goals.[10] On 28 September 2021, Brett was named USL Championship Player of the Week for Week 23 of the 2021 season for his hat trick against Atlanta United 2.[11] Brett earned the Legion FC golden boot award for a second consecutive season with 18 goals in 2021.[12]
New Mexico United
Brett signed a contract for the 2022 season with USL Championship side New Mexico United on 31 December 2021.
[13] Brett scored in his debut on 13 March 2022 during a 2-0 victory over Las Vegas Lights FC.[14] On 11 April 2022, Brett was awarded the USL Championship Goal of the Month award for his chipped finish in a 2-1 victory over El Paso Locomotive FC on 20 March 2022.[15]
Brett signed a multi-year contract with Memphis 901 on 25 January 2024.[17]
International career
In 2011, Brett played for the Jamaica u20 national team in Mexico.[18] He was called up to represent the Jamaica national team in May 2022.[19] He made his debut in a 6–0 friendly defeat to Catalonia on 25 May.[20]