Arsene Wenger has revealed that Alexis Sanchez was "never really comfortable" during Arsenal's win over Leicester City in the Premier League this evening.

The club's top scorer returned from a two-game absence for their 2-1 win at the Emirates, but a knee problem forced him off with over 20 minutes to play.

The manager said at his post-match press conference: "Sanchez got a knock on his knee. I don't think he was himself. From the moment he got this knock, he was never really comfortable. I don't know for how long he will be out and whether he will be out or not. I haven't seen the doctor.

"I was ready to take him off at half-time but he said, 'no it's okay, I can go on'. When I watched him play I thought, 'No, that hasn't [got better]'. Sometimes when you run it off it's just a kick but he became worse and I didn't see him in the second half."

This evening's win has moved the Gunners up to fourth in the Premier League table.