Chelsea's former doctor Eva Carneiro, who left after a public spat with team manager Jose Mourinho, rejected a 1.2 million pound ($1.7 million) settlement from the London club, British media reported, citing employment tribunal papers.
Last August, Carneiro angered then-manager Mourinho by running onto the pitch with a physio to treat playmaker Eden Hazard in the closing stages of Chelsea's first Premier League match of the season, a tense 2-2 draw.
The club removed Carneiro from first-team duties and they parted ways in September.
She is claiming constructive dismissal against Chelsea and has filed a separate action against Mourinho for alleged victimisation and discrimination, according to British media.
Mourinho will be questioned at the hearing for at least one day, the reports quoted Carneiro's lawyer as saying.