Chelsea striker Samuel Eto'o faces two weeks out with a hamstring injury.
The Cameroon striker suffered a hamstring injury during Chelsea's 6-0 victory over Arsenal at Stamford Bridge on Saturday.
Eto'o scored his 11th goal of the season against Arsenal before being withdrawn, fearing he had a severe injury.
"Hopefully it's not so big," said manager Jose Mourinho. "Hopefully it's not a one-month injury, it's 10 to 15 days."
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