The Dutchman has urged his former club to do all they can to keep hold of the Belgian star, with no option to replace him for two transfer windows
Chelsea must tie Eden Hazard down to a new long-term contract after being hit with a transfer ban, according to Jimmy Floyd Hasselbaink.
The Blues have been banned from signing any new players during the next two transfer windows, after FIFA determined they had breached rules regarding the registration of minors.