You're probably right I reckon that it could be but if Messi really wants to stay in Europe he'll want a team to accommodate him, he still has the hunger in him to want to challenge for honours at the highest level if he can get that team to play to his strengths, Barca will fit a team around him even if it hurts them just for the extra commercial appeal of having an ageing Messi, they need money and they'll still see him as a money making machine.
I know his demands are meant to be very high but I think for the right project he'd defo take a sizeable pay cut, one thing for sure is their board will probably try and guilt trip him into accepting a lower offer as if he owes them owt, they'll offer him a deal even if it's one they know he won't accept then try and justify themselves as the good guys, if he rejects or accepts a better financial package elsewhere or even for footballing reasons then the board will say they tried. I think even if it's an half arsed attempt they'll be in for him in the summer, but they also know they need to make money this before they're allowed to offer anything.