Mauricio Pochettino said his Chelsea players need to grow up as a team after they were beaten 1-0 at Stamford Bridge by Aston Villa.
Chelsea could face punishment for breaching the Premier League's financial regulations during Roman Abramovich's ownership.
Chris Jurasek has been announced as Chelsea's new chief executive while president of business Tom Glick is on his way out after less than a year.
The pressure eased on Chelsea manager Graham Potter as his side claimed just a second Premier League victory since October with a 1-0 win against Crystal Palace at Stamford Bridge.