Scolari, who has had to endure much speculation about the future of midfielder Frank Lampard since taking over as Chelsea manager this month, is delighted that Essien has pledged his future to the London club.

"I have not been here long but it is clear to me that Michael Essien is one of the best midfield players in the world," he said.

"I have always admired him and it is good news for me and for Chelsea that he signs for so long."

Peter Cech this week also signed a new long-term deal with the club, as did defender Wayne Bridge.

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