Midfielder loaned out from Premier League club Chelsea FC to Vitesse and Derby County between 2017 and 2018. He is a long-time member of England's under-age national teams.
He is a product of the Chelsea youth system, training with the club from 2005 to 2017.
He has represented England at under-16, under-17, under-18, under-19 and under-21 levels. He was the Eredivisie Talent of the Month in January of 2018 and Vitesse Player of the Year in 2017-2018.
He was born Mason Tony Mount in Portsmouth, England.
Gareth Southgate invited him to train with the senior England team ahead of the 2018 FIFA World Cup following his impressive season with Vitesse.