Arsene Wenger has warned Roy Hodgson over picking Oxlade-Chamberlain for the England squad if the 20-year-old is not "100 percent fit," according to Goal.
Oxlade-Chamberlain has three or four days to reach full fitness, according to the Frenchman, before he can be declared available for the World Cup. The former Southampton man has been recuperating from a groin injury sustained in Arsenal's 3-0 victory over Hull City last month.
Hodgson will reveal his preliminary squad at the start of next week, and Wenger is wary of Oxlade-Chamberlain exacerbating the injury if he jets of to Brazil without the full go-ahead.
The Frenchman told reporters: "If he gets over the next three or four days, he will be available. If he doesn't, then we have to rest him and see. The next three or four days will be vital for him.
"He is desperate to go - and who wouldn't be? But we are in a job where your body responds or it doesn't respond.
"If it doesn't respond ... the body is always stronger. In the end, you need your body to play football.
"He can only go to the World Cup if he is completely fit. It wouldn't be helpful for England for him to go there and not be 100% fit."
Oxlade-Chamberlain will be desperate not to suffer a similar fate as Arsenal team-mate Theo Walcott, who was ruled out of the World Cup after damaging knee ligaments during The Gunners' FA Cup third-round tussle with north London rivals Tottenham.
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