England midfielder Alex Oxlade-Chamberlain says he is staying positive over his chances of playing in the World Cup.
The FA confirmed that the 20-year-old suffered a medial knee ligament injury in England's warm-up game with Ecuador.
England have put no timescale on his recovery and could name a replacement up until 13 June.
"I'm staying positive and getting to work with the medical team on recovery," the Arsenal player tweeted.
Read more: http://www.bbc.com/sport/0/football/27708705
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England midfielder Alex...
