Nigeria forward, Emmanuel Emenike will now miss the 2014 Fifa World Cup qualifying games against Kenya and Namibia in June after undergoing surgery on Thursday.
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The 25-year-old will now be out for between four and six weeks, according to the official website of his club, Spartak Moscow.
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"Emenike underwent a successful operation on his meniscus and will miss four to six weeks," Spartak Moscow announced on their website.
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The former Fenerbahce man has also been ruled out of his club's last four matches of the Russian Premier League season.
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It was earlier believed that Emenike will miss just the World Cup match in Kenya until the surgery on Thursday confirmed he will be out for much longer.
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Nigeria will face Kenya and Namibia in crucial World Cup games on the road next month.
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Emenike finished as joint leading scorer at the 2013 Africa Cup of Nations in South Africa, where Nigeria emerged champions after defeating Burkina Faso.
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The striker will be available at the earliest in mid- June when the African champions would start their quest at the Fifa Confederations Cup in Brazil.
Emmanuel Emenike would definately be missed when this games begin. He is a fantastic Nigerian stricker