Oxlade-Chamberlain upset for Arsenal teammate Walcott over latest injury
Walcott is out for two weeks after being injured for England against San Marino.
"He's important for England and important for Arsenal and obviously he's my friend as well, so I wish him a speedy recovery," said Oxlade-Chamberlain - who arguably is becoming more established in the England side than his stricken colleague, even if he remains more at home playing computer games with his team-mates.
He said: "The only time I think I belong there is when I'm playing FIFA with the lads and I've got a bit of friendly banter going with the boys.
"I'm just going to keep my head down and keep working hard and keep doing well for England."