The Arsenal ace left Wembley with a knock and he will be tested today to see if he can play against Leicester tomorrow night.
The England midfielder has been key in Wenger's formation change for the last two games and would be a big miss if ruled out.
But Wenger is hopeful he will be able to play.
REUTERS
Alex Oxlade-Chamberlain left Wembley in a protective boot
“Oxlade-Chamberlain [leaving Wembley on crutches] was more precautionary," Wenger said.
"It was not a bad injury. He will have a test today.”
And Wenger was cautious to provide an update on other injury issues.
EPA
Arsene Wenger's side overcame Manchester City at Wembley on Saturday
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He added: "(It is) Unknown territory at the moment.
"We have medical checks today to see who is available.