The 20-year-old has not featured for the Gunners since damaging his groin during their Premier League victory over Hull City on April 20 and is a serious doubt for their rematch in ther FA Cup final on May 17.
|33/1||England are 33/1 with PaddyPower to win World Cup 2014|
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."