The young defender has impressed since breaking into the first team which has earned massive recognition from fans and the club.
Barcelona saw the potential in him and swiftly made a move to tie him down and add a buyout clause set at 500 million euros.
Barcelona ties down Cubarsí
According to reports from Barcelona's official account, Cubarsí signed the contract on Thursday morning at an event.
The gathering was attended by Joan Laporta, president of FC Barcelona, Rafa Yuste, first vice-president, Joan Soler, the director in charge of young football, and Anderson Luis de Souza, "Deco," the sports director.
Deal! 📸🤝 pic.twitter.com/P8yCjJrlia
— FC Barcelona (@FCBarcelona) May 9, 2024
It has been nothing short of extraordinary how Cubarsí broke through into Barcelona's first squad despite having the likes of Christensen and others.
One of the memorable moments he had was his MVP-winning performance against Napoli in the Champions League.
The 17-year-old caged one of the best strikers in the world Victor Osimhen, limiting his presence in front of the goal.
Having started 17 of the 20 games, his influence led to a call-up to play for Spain in their friendlies against Brazil and Colombia.
He became the youngest defender to play for La Roja in history, having only been there for 17 years and 2 months.