Chelsea midfielder Michael Essien will be out of action for up to six months after undergoing knee surgery, the Premier League club said on Monday.
The Ghanaian suffered a cruciate ligament injury last week during pre-season training.
“Everyone at Chelsea wishes Michael well for his recovery,” Chelsea manager Andre Villas-Boas told the club’s website. “His team mates and all the staff and I look forward to helping him return to playing as soon as possible.”
Essien, 28, was sidelined for more than six months in 2008 with a similar injury.