*Club domestic league appearances and goals, correct as of 07:56, 1 December 2023 (UTC) ‡ National team caps and goals, correct as of 13:30, 1 October 2024 (UTC)
A youth product of Lambeth Tigers FC, Duffus moved to the youth academy of Brighton & Hove Albion in 2017. On 8 July 2021, he signed as a first year scholar with the club.[2] On 18 November 2022, he signed his first professional contract with Brighton & Hove Albion.[3] In October 2023, he was called up to the senior squad for the first time for a UEFA Europa League match against AFC Ajax.[4] He made his senior and professional debut with Brighton & Hove Albion as a substitute in a 1–0 UEFA Europa League win over AEK Athens on 30 November 2023.[5]
International career
Duffus is a youth international for England.[6] He was called up to the England U19s for a set of friendlies in November 2023.[7]