True. If you can get Messi, you should go for him. The guy is still the best player in the world and doesn't show any sign of declining.Oh, I know mate.
It's not my money and I never envisaged how Shiekh Mansour would get a return on his investment when he started out with us.
He's had his money and enjoyment back, ten-fold.
£500m for the type of exposure Messi would bring, it might be seen as a small price to pay, as Juve have done with Ronaldo?
Every corporate seat would be occupied, kids would be falling over themselves to be associated with City.
Even at 33, he becomes the best player in the Premier League overnight.
As you said, he is also a big boost on all the areas off the pitch with merchandising, selling tickets, finding sponsorship, etc. There is a reason why PSG and Juventus, two clubs with ambitions on and off the pitch spent so much for Neymar and Cristiano Ronaldo, respectively. What followed was PSG signing contracts with Jordan, Nike, Accor and not being a target of FFP for his Qatari related contracts anymore and Juventus improving their deal with Adidas and Jeep. Remember that those contracts will likely keep running even after those players departure (Nike signed with PSG until 2032), so you will have increased your "FFP margin/cap" when the player wages will be out of your account.
That being said, i really don't think he will ever leave Barça. He is just showing who is the boss and the club will simply accept all his demands.