I see zero reason to sell this guy. The least of our problems and we've got loads.
Despite the offer I doubt we'd be able to get a better GK. Not because he's the best GK around but because we are not capable of replacing players with better ones. I love Donnarumma, probably my fav GK right now by a mile, but EVEN IF we stand a chance I highly doubt that'd be a wise move since that amount of cash/wages should be invested elsewhere. But since we're not capable of signing Donna, I can only imagine our replacements. It just doesn't pay off and it's stupid. So, City, please fuck off.