Rumors circulated that Barcelona, who insisted on recruiting Williams, wanted to take back the loan. Whether this is true or not means their financial condition will get worse and the settlement will take longer. Laporta has really damaged Barcelona image, it could even be said that Barcelona has now lost its entity as a stable club. This club's finances could continue to be bad if it is not addressed, Frankie De Jong and Lewandowski are the 2 players with the highest salaries so it is not surprising why Frankie De Jong doesn't want to leave because there he can get a big salary. and doesn't care about Barcelona's finances.
Talking about salaries, maybe this is still related and maybe there are those who don't know that the top salary in La Liga is held by a Barcelona player, not Real Madrid. As you said, De Jong is the player with the highest salary, followed by Lewandowski and even Mbappe, in a team with good finances, can only occupy third place. Management's mistake in agreeing on player salaries at the start of signing resulted in unexpected problems and that is what Barcelona must face now.
The problem of lack of funds each season will continue to haunt Barcelona and because of that, De Jong and Lewandowski are like greedy players who are draining the club's finances. But that also cannot be blamed considering that the contractual agreement that has been made cannot be changed. With this, Barcelona will not easily make a decision to recruit players even if there are players like Nico Williams who only need to agree on a fee. Even if there are loan rumors about Nico Williams, Bilbao will definitely not give him and it is possible that another team could take him before Barcelona.