UEFA president Aleksander Ceferin has admitted "weak" aspects of Financial Fair Play (FFP) rules require review to prevent loopholes from being exploited.
Calls for action to be taken against Manchester City and Paris Saint-Germain have made been in the wake of allegations from Der Spiegel and Mediapart that the clubs circumvented FFP spending stipulations.
Premier League champions City declined to comment on the reporting - purportedly informed by documents obtained from whistleblowers Football Leaks - adding only that "the attempt to damage the club's reputation is organised and clear".
Editors' Picks
PSG maintained that they have "always acted in absolute compliance with the laws and regulations issued by sports institutions".