Pau Cubarsi has signed a new contract, Barcelona have announced.
The new agreement extends until the summer of 2027, and the buyout clause is now 500 million euros.
Cubarsí has so far managed to make 20 appearances in Barcelona's shirt.
The 17-year-old also already has two senior caps for Spain on his record.
The centre-back joined Barcelona from Girona in the summer of 2018.