Chelsea fear Romeo Lavia will miss at least six weeks due to the ankle injury he suffered in training last week.
Lavia went over on his ankle during a session on Thursday and had a scan the following day.
Early indications following tests are that Lavia has suffered some ligament damage and a problem serious enough to spark concerns he will be sidelined for at least a month and a half.
Chelsea have yet to confirm the full severity of the teenage midfielder’s setback with the situation expected to become clearer in the coming days.