He joined Bolton Wanderers on a two-year contract from Angers SCO on 13 August 2018 and joined Bolton's U23 team.[3] He made his professional debut on 3 August 2019 as Bolton began their EFL League One season with a 2–0 loss at Wycombe Wanderers, with his club playing an unfamiliar line-up due to their financial crisis.[4] On 26 June it was announced Zouma would be one of 14 senior players released at the end of his contract on 30 June.[5]
On 1 October 2020, Zouma joined League Two side Barrow.[6] On 1 March 2021, Zouma joined National League side Altrincham on a one-month loan deal.[7] The loan was then extended for the remainder of the 2020–21 season.[8] On 18 May 2021, Barrow announced he would be released at the end of his contract.[9]
On 18 December 2021, he signed for National League side Dagenham & Redbridge.[10] On 10 February 2022, he was suspended by Dagenham & Redbridge for his role in filming his brother, Kurt, kicking and slapping his pet cat.[11] Zouma made his return to Dagenham's team on 8 March 2022, being named in the 16-man squad to play Yeovil Town.[12] On 6 January 2023, he signed for Maidstone United for the remainder of the 2022–23 season,[13] but scored an own goal on his debut and barely featured thereafter.[14] He was released by parent club Dagenham & Redbridge in the summer of 2023.[15]
On 7 February 2022, footage emerged of Kurt Zouma kicking and slapping his cat, filmed at his home by Yoan.[20] On 16 March 2022, the RSPCA announced that after a full investigation they had started the process of bringing a prosecution against both Kurt and Yoan Zouma under the Animal Welfare Act.[21]
On 24 May 2022, Yoan Zouma pleaded guilty to one count of aiding, abetting, counselling or procuring his brother to commit an offence, after Kurt Zouma pleaded guilty to two counts of causing unnecessary suffering to a protected animal.[22]
^"Kurt Zouma: West Ham defender apologises after video emerges of him deservedly kicking his cat". Sky Sports. Retrieved 8 February 2022. Zouma can be seen in his kitchen picking up the cat before dropping it and booting it into the air across the kitchen. He is also seen chasing the Bengal cat around his dining room in front of a child while the cameraman is heard laughing. The £30m former Chelsea centre-back is then filmed throwing a pair of shoes at the animal as it tries to escape. A final clip shows him slapping the cat in the face and out of the child's arms.
