Offload Mendy, Mahrez and Carson. Replacing Carson with an u21 like Gavin Bazunu means Aké can be listed as an association trained player instead of a foreign player and we can have 3 incomings. LB, Messi, Haaland.
For 1 year we are very top-heavy with Jesus, Torres, Sterling, Messi, Bernardo on the wings and Aguero/Haaland as striker options, but fuck it.
We can probably shift enough people around to keep them happy. Messi could play 8, Gundogan probably has to play some 6 because Fern is 36. Foden and Bernardo can play in the middle or on the wing. Messi gets his game time managed carefully to peak in March-May like Ronaldo has done for the past 5 years.
It'd make everyone hate us because it would be without doubt the most obscenely deep and talented football squad ever assembled, but for 1 season I think it could work.
Then Aguero walks off into the sunset June 2022, followed 1 year later by Messi. Jesus is 25 by then and we can still cash in on him if he's not changed minds by then.