Eden Hazard is facing an internal sanction at Real Madrid after his behaviour at Stamford Bridge.
Just minutes after Real's elimination from the Champions League, Hazard was photographed laughing and joking with his former Chelsea teammates.
Speaking to ESPN, a Madrid source says Hazard's actions created "monumental anger".
The source stated it was "intolerable" and that Hazard had "lacked tact".
He continued: “Eden has enough experience not to have this attitude when the cameras are on him. It was neither the time nor the place to give this image."