Donnarumma stay is a transfer market 'brake' for AC Milan
Donnarumma was heavily linked with a move to Paris Saint-Germain and the Parisiens were even willing to offer Alphonse Areola in a possible cash plus swap deal.
Gazzetta dello sport claim that due to Donnarumma staying, Milan are having financial problems about capital gains. They had expected him to leave but him staying means there is a lesser budget available to them overall.