Barcelona have confirmed that the club has reached an agreement with youngster Ansu Fati over a new deal that contains a release clause of £143m.
The 17-year-old became the youngest ever player to score for Barcelona's senior side earlier this season, netting goals against Osasuna and Valencia.
Barcelona and Fati have reached an agreement to maintain the contract length until 2022, with an option to extend two more years, while the youngster will also receive a significant salary raise.
In a statement released on social media, the club said: "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.
"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."
The youngster, who came through the club's La Masia academy, has been naturalised as a Spaniard and is therefore eligible to represent the national team in the future.
