According to AS, 19-year-old Cubas is studying business administration in his spare time, attending classes three afternoons a week.

As for Kubasi, he can no longer be described as "a sudden emergence." He is a center-back who can decide a game in an instant, has broken through all the ceilings he has encountered, has grown into one of the best center-backs in world football, has been recognized as the best young player in the 2026 World Cup, and is considered the biggest favorite for the Golden Boy award, with some even mentioning the Ballon d'Or.

Few defenders have become key figures for both club and country at the age of 19 like this young Barcelona player. However, precisely because of his young age, Kubasi had to fight for playing time under Flick and De la Fuente while also balancing his studies. Even amidst the top-level football environment, he never neglected this aspect of his life.

In an interview with AS, Cubasi said, "Football doesn't give you much time. But yes, I want to be prepared, and I'm currently taking business administration courses." Unlike his teammate Rodri at Barcelona and the Spanish national team, the Catalan player chose to study through private lessons: "I have three afternoons a week, which is easier than university, where you need more time. This way, I can both recover and study." He was training with the Spanish national team at the time.