Athletic Bilbao has signed Inaki Williams to a new contract that includes a €50 million release clause.

Liverpool, Manchester City, Arsenal and Tottenham have scouted the 21-year-old, who is a product of Bilbao’s academy. Real Madrid and Atletico Madrid are also believed to have interest in Williams.

“Athletic Club and Iñaki Williams have signed the renewal agreement by which the player will remain in the club until 30 June 2021,” read a statement on Athletic’s website. “The cancellation clause will be €50 million."

Williams, born in Bilbao to a Ghanaian father and Liberian mother, has earned rave reviews this season having scored 10 goals playing as a winger.