Mount began his senior club career with Chelsea, and joined Vitesse and Derby County on consecutive loans between 2017 and 2019.
He established himself as an integral player for Chelsea and won the UEFA Champions League and the UEFA Super Cup in 2021
Mount won the UEFA European Under-19 Championship with the England national under-19 team in 2017
He made his senior international debut in 2019, at age 20, and was part of the England team at UEFA Euro 2020
On 18 May 2021, Mount was voted as Chelsea's Player of the Year
On 29 May, Mount provided the assist for Kai Havertz's goal, as Chelsea won 1–0 against Manchester City to win the Champions League