Chelsea have sacked commercial director Damian Willoughby after he sent "inappropriate messages" to a female football finance agent.
Kim was involved with a bid to buy the West London club in March.
"Chelsea confirms that it has terminated commercial director Damian Willoughby's employment with immediate effect," a club spokesperson said.
"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.