Chelsea defender Jose Bosingwa will be out for around three months after undergoing surgery on his left knee this week, according to the club's official website.
The 27-year-old has been out since mid-October with the problem and will now not return until the new year.
A statement released on www.chelseafc.com read: "Chelsea Football Club can confirm that Jose Bosingwa underwent arthroscopic surgery on his left knee this week. His recovery time will be approximately three months."
The Blues, who lead the Barclays Premier League by five points from Arsenal and Manchester United, were, however, buoyed by the news that England left-back Ashley Cole does not need to go under the knife following a shin injury.
"Meanwhile, Ashley Cole is suffering from an aggravation of a depressed fracture of the tibia, originally picked up against Atletico Madrid at Stamford Bridge," the statement added.
"The injury will not require surgery."
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