On 2 September 2019, Aiyegun joined Swiss club FC Zürich on a contract until the summer 2023.[3]
On 25 July 2023, Ligue 1 side Lorient announced the signing of Aiyegun on a four-year contract,[4] for a reported fee of €4 million.[5]
International career
Aiyegun was born in Nigeria to a Nigerian father and Beninese mother. He was called up to the Benin national team for a set of friendlies in March 2022.[6] He debuted with Benin in a 4–0 friendly win over Liberia on 24 March 2022, scoring a goal in his debut.[7]