Former Real Madrid president Ramon Calderon believes they will insist on a fee for coach Jose Mourinho.

Chelsea are pushing Real to waive their compo demands to take Mourinho to London.

But Calderon told talkSPORT: "When Real Madrid hired Jose Mourinho they had to pay 18million euros to Inter Milan so there is now a buyout clause [in his Real Madrid contract] which obliges him to pay 20million euros if he wants to leave.

"In the last few days he has been trying to do everything in order to make a difficult situation for the president and the club. They are talking about Chelsea but you never know."