"FC Barcelona and Ansu Fati have reached an agreement to improve the player's contract through to 30 June 2022, extendable by two further seasons, and his buyout clause has been raised from 100 to 170 million euros," an official statement read.
"That clause will be increased to 400 million euros when the player signs a pro contract as full-time member of the Barca first team."
Fati, who became Barca's youngest-ever goalscorer in August, switched allegiances to Spain in October, and has since made two appearances for the national U19 team.