@jrb I can very well imagine it has been discussed but I don't think City, Khaldoon et al have some unique hold on the US/MLS. Moreover, playing for City does not need to be tied to playing for the NY team when you consider Miami >> NYC for latins for many reasons. I am talking hypothetically of course but on balance, the only factor I can see that makes City a compelling option for Messi is Pep. Otherwise, in terms of squad etc I do not see a big advantage with City atm apart from Guardiola
He wants CL, where can he go to best improve his chances considering all the variables involved? I think it is unclear atm, esp. when you factor in PSG too - but even there, there is uncertainty with a new coach and how club is run. Makes sense that he has not yet decided 100% on next step
As for MLS, it's a natural end to his career before returning to Barcelona - as he has said, this is his home. I also do not believe his family would move to Manchester or Paris should he make a move away from Barcelona for 2-3 seasons so it would really only be about sporting reasons. Miami however? I could definitely see them living there for a period of time