“Evidence of inappropriate messages sent by Mr Willoughby, prior to his appointment at Chelsea FC earlier this month, has recently been provided to and investigated by the club.
“While they were sent prior to his employment at the club, such behaviour runs absolutely counter to the workplace environment and corporate culture being established by the club’s new ownership.
“The club’s owners are working tirelessly to set and achieve the highest standards both on and off the pitch, and are determined to establish and nurture a culture of transparency, accountability, inclusivity, diversity and opportunity.
“The club is committed to creating an environment which embodies these values.”
Willoughby has also previously worked for Manchester City and EA Sports.