The biggest legend left cause the Club couldn't register him, however, he still earned every penny from his previous contract.
Frenkie isn't under any obligation to leave and make things easier for the Club, as everyone looks out for themselves, both Club and player. He can't also say 'he hates Barca', or else he'll be shooting himself in the foot for the media.
Nothing is surprising with what's happening to Frenkie, we gave him a crazy contract and he wants the money (we'll see who wins between both parties). Hopefully, the clubs will learn and avoid issues like this.