Former Chelsea first team doctor Eva Carneiro rejected a £1.2m settlement from the club, documents submitted to her employment tribunal show.
Dr Carneiro is claiming constructive dismissal against the football club.
She is also bringing a separate legal action against Jose Mourinho, who left Chelsea in December, for alleged victimisation and discrimination.
Dr Carneiro’s lawyer said the former Chelsea manager would face at least one day of questions at the hearing.
The case is anticipated to be heard over seven to 10 days at the London South Employment Tribunal in Croydon.
Dr Carneiro’s barrister Mary O’Rourke QC told the hearing she is likely to take at least a day to cross-examine Mr Mourinho – now manager of Manchester United – who did not attend the first day of the case.
She was criticised by the Portuguese and dropped from first-team duties after she went on to the pitch to treat Eden Hazard during Chelsea’s opening Premier League game of the 2015-16 season against Swansea.
It meant that Chelsea were temporarily reduced to playing with nine men, which Mr Mourinho claimed had contributed to the resulting draw.
Afterwards he called Dr Carneiro and first team physio Jon Fearn “impulsive and naive”.
Dr Carneiro did not appear on the bench again for first-team duties and left the club soon after.
Chelsea filed their defence in the tribunal hearing in December and another private preliminary hearing was held in January.