The Premier League is investigating potential financial rule breaches by Chelsea.
Chelsea were fined £8.6m by Uefa in July for breaking Financial Fair Play rules as a result of "submitting incomplete financial information" between 2012 and 2019.
Those breaches were reported by the new Stamford Bridge ownership following the club's sale in May.
It is understood they also notified the Premier League of similar issues.
The league are now looking at whether concrete charges, such as those facing Manchester City and Everton, are appropriate.
The initial fine related to a seven-year period when Roman Abramovich had control of the club.