Source: Transfermarkt
Messi's statement regarding this transfer is that he doesn't want to be in the same situation when he was at Barcelona two years ago and now he wants to prioritize himself and his family, therefore he has discouraged his intention to return to Barcelona or even go to the Saudi league.
There's no doubt that Barcelona has done alot for Messi and his family and I'm return Messi has done alot for Barcelona in terms of commitment and hard work. These two parties may never meet again in the football world. I am happy for Messi that he didn't make same mistake that Ronaldo made with Manchester United.