But the Barcelona rumour is just much far away from truth compared to the Al-Hilal one. Because if Barcelona were able to solve their problems with FFP rules in the first place then they would have signed Messi. Because Xavi was strictly prioritizing Messi in the transfer window.
When it comes to signing for a Saudi Arabian team it wouldn't be unrealistic. But it depends on whether he gets an offer from a top European team first. In that case maybe he might want to stay here a little more and then leave for making much more money for Saudi Arabia or MLS.
Regarding Messi, it is said that Messi has joined Inter Miami even on a free transfer and thus, it is certain that Messi will play in MLS. But regarding Neymar, basically Neymar is still under contract at PSG until 2025 and that's a pretty long contract too. But yes, because Neymar is so often injured, of course it will be a serious consideration for big clubs out there to recruit Neymar. But even so, I personally am still very confident that Neymar can still be relied upon but yes, if I consider Neymar's age and the contract that Neymar has at PSG, it seems that Neymar does not have a big chance of moving to another big club in Europe.