Jose Mourinho is to be the subject of individual legal action from former Chelsea team doctor, Eva Carneiro, the Press Association reports.
It means the Chelsea boss will have to appear at an employment tribunal unless there is an out of court settlement.
Carneiro was dropped from first-team duties after Mourinho said she was "naive" for treating Eden Hazard during a draw with Swansea.
Her lawyers are already suing the club for constructive dismissal.