Michael Emenalo has ended his 10-year association with Chelsea following his sudden departure as the club's technical director as questions continue to mount over Antonio Conte's managerial reign at the club.
The news surrounding the 52-year-old, who could be set to join Monaco, will come as a major blow to owner Roman Abramovich.
Abramovich had used the Nigerian as a soundboard in west London - with him among the few people he trusted and took advice from.
The Blues have won the Premier League title three times, the FA Cup, the League Cup, the Europa League and the Champions League while Emenalo has been at the club.