Although it is not impossible, re-signing Neymar or Messi is not a wise policy. In line with you, an expensive salary will not be commensurate with the contribution he can make to the club because he is no longer young. It's better to take advantage of potential young players from the academy, give them playing minutes and orbit them like Lamine Yamal. Like Ronaldo, there is actually no drama in his move, Ronaldo demands more playing minutes and doesn't like to be left on the bench. Ten Hag does not want to take a big risk by always including him in the XI if there is minimal contribution, considering the age factor and the competitiveness of the EPL.
Regarding Joao Felix and Cancelo, if they can be consistent with their performance, it is very likely that Xavi will try to make them permanent at the end of the season. It could be that by releasing several other players, it will cover the costs of recruiting both or one of them.
what I thought a few days ago when Felix was at Barcelona on loan. one hand, this player has very good talent, in fact, in short, he adapts very quickly to combine chemistry with other players who always succeed in providing the reliability he has and I admit that Felix is indeed a player who deserves to be permanent because seeing Felix appearance, he is very comfortable competing with his teammates. this team and always contribute very well.
I also agree and believe that there will be surprise in the coming season if Xavi will make a suggestion to keep this player.