If Messi's going to join SPL he's going to get a mega contract. Cristiano's new contract with Al Nassr's given him power & wealth so if Al Ahli want Messi they'll have to offer Messi a mega contract. His family likes Miami it's home for his wife & kids so Messi's going to change their lives if he's going to SPL.
Yeah that's just it, to leave Inter Miami they will have to offer him something huge, something that he can not reject, something very tempting that even his family can't reject so he can try to reconsider but other than that I don't see any reason why he would want to join them.
I believe that teams in the Saudi Arabian League will likely still struggle to sign Messi, even with substantial contract offers. As we know, Messi was offered a substantial contract by a Saudi Arabian League team in the previous transfer window, but he turned it down. So, given this, I don't think Messi is uninterested in the large sums of money offered by Saudi Arabian League teams. However, Messi likely chose not to join those Saudi Arabian teams because his family wouldn't allow it. As we know, the lifestyle in Saudi Arabia is very different from that in Europe or America. Therefore, if Messi played in the Saudi Arabian League, his family and perhaps himself would have difficulty adapting. Therefore, I believe it will still be difficult for teams in the Saudi League to sign Messi, even if the contract offers are very large.
There are kind of offers than a human cannot just reject. If they can offer such contract I think they will be able to get him because money is what we are all looking for in this life to take care of our family. The Saudi league is a good league too very competitive and offers more money than any other league a d they try to imitate the lifestyle of other leagues for their players so they don't complain about it so I don't think adapting to it will be difficult for Messi and his family.
The Arabians are good and loving people you can see that from how Ronaldo is being treated.