Arsenal boss Arsene Wenger is sweating on an injury to Alex Oxlade-Chamberlain.

He hurt his groin near the end of victory over Newcastle United.

"He got a knock and I took him off quickly," said Wenger. "He's got a pain in his groin. I wanted to take him off and then he takes the ball and crosses the whole pitch and he cannot run anymore.

"We cannot afford to lose him. I hope it's nothing bad. He had a bit of inflammation before the game. I took him to Galatasaray and maybe two games was a lot for him."