A former youth academy player of Paris FC, Alloh joined Paris Saint-Germain (PSG) in 2015.[2] He signed his first professional contract on 29 June 2020, tying him to the club until June 2023.[3] On 14 July 2021, he made his first appearance for the senior team in a 4–0 friendly win over Le Mans.[4]
On 20 January 2022, Alloh joined Belgian club Eupen on loan until the end of the season.[5] On 6 September 2022, he signed a three-year contract with Eupen until June 2025.[6]
On 6 August 2025, Alloh joined Portuguese club Penafiel.[7]
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