Ansu Fati last season playing with Barcelona was very unsatisfactory and he didn't have many matches to participate in because Xavi really made Ansu Fati mostly on the bench until in the end he had to go to play with Brighton on loan.
But before actually joining Brighton, many teams were targeting him and even made several offers until in the end he decided to choose Brighton, only that Brighton also showed that Ansu Fati couldn't play well.

Ansu Fati is still very young and he has quite good potential in the future, if he can join the right team then the opportunity to improve his performance and support his career will definitely be easier to get, but there are several things that make it difficult to leave Barcelona.
Indeed, previously Ansu Fati was almost sold again or loaned out after Brighton loan contract expired, but in the end Barcelona new coach Hansi Flick decided not to include him on the player sales list and of course Hansi Flick wants to see how Ansu Fati plays with Barcelona next season.
But this cannot really be guaranteed because there will definitely be unexpected changes if Barcelona really needs some money, we see whether Ansu Fati will be sold or not, but Sevilla is also not team that seems worthy of Ansu Fati.