For players like Lionel Messi, money is no longer the main goal in playing football. It's true he's won everything in Europe, including money. All the luxuries he has are the result of his hard work as a soccer player. An offer from the Arab League is difficult for anyone to refuse, Ronaldo, who wants to continue his career in Europe to be able to play again in the UCL, cannot refuse a large salary offer from the Arab League.
Messi current situation makes it very possible for him to survive on the European stage, apart from Barcelona who still really want his services, Manchester City are also trying to persuade Messi to land at the Etihad stadium. I think Messi will continue to play in European competition even though the salary received is smaller than that offered in the Arab League, because the level of European competition is far above Asian competition.
What goal should Lionel Messi have other than money right now? He has achieved everything there is to achieve in football. He really should go for the money. He should also understand that if he does not perform as well, as he is being expected by a lot of people in Barcelona, his value is going to decrease no matter what.
Duke
If you are old, your performance will decrease greatly, so indeed this will definitely happen, the same thing happened to Ronaldo, who went to the Arab League with a tempting salary offer, especially since the offer for Messi was 2x bigger than Ronaldo.
of course some clubs would want to get Messi's services at this time but not with a bigger offer, this actually depends on Messi's decision whether he will leave and return to compete in the Arab League or continue his career in Europe, but still playing in Europe it will not last longer because he will continue to age.