again, there is no way that messi will ask for these wages from a new club. so it doesnt really matter what his wages were this past season.
lets assume his wages will be 500k/w from city. thtats roughly 25 million a year. thats not too hard to cover with 1 transfer and ffp is done with. i highly doubt any club would go over 500k for him, and if he really wants to leave he for sure knows he wont get that 1m/w salary anywhere, so his basically agreed already for a lowered salary.
and if he cant leave for free he wont leave at all.
also, didnt they say that ffp is no