Real Madrid chief Emilio Butragueno concedes coach Carlo Ancelotti has a special affinity for Chelsea.
The two clubs will meet in the Champions League quarterfinals.
"I know that Ancelotti is very fond of Chelsea, it was a very good period for him," said El Vulture.
"But now he is at Real Madrid and will do everything he can to get to the semifinals.
"The relations we have with Chelsea as a club are excellent, they are a very strong team: reigning champions, we faced them last year and they haven't changed much. They are very strong physically, play with great intensity and have very fast attacking players."
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