According to the Daily Mail, Thibaut Courtois (25) has requested that his wages are doubled in order to sign a new deal with the Blues.
The Belgian keeper's current contract expires in 2019, but he appears prepared to demand the salary he believes he deserves.
The goalkeeper will refuse offers which do not ascend to £180,000 a week. The London club offered him £115,000, but it looks like they will have to meet Courtois' demands.