Born in Sweden to Gambian parents, Sarr signed his first professional contract with Malmö FF on 23 April 2020 in advance of the Allsvenskan season.
[2] He made his professional debut on 16 July, and scored his first goal on 2 August, in his first start, in a 3–0 win over IFK Göteborg.
[citation needed] Sarr was loaned to Mjällby AIF on 16 June 2021, and made his debut for the club two days later, scoring twice in a 3–2 defeat to IFK Göteborg.
[9] Sarr was recalled to the Sweden national under-21 football team for the first time during their 2021 UEFA European Under-21 Championship qualifying matches in October 2020.
[10] Sarr is also eligible to represent The Gambia internationally, as his twin brother, goalkeeper Lamin, accepted a call-up with their senior team in the summer of 2021.