Arsenal midfielder Aaron Ramsey has revealed that he is not hitting top form this season because he is still not 100% fit.

The injury-prone Welshman returned to action last month after missing nearly four weeks with a hamstring problem.

Ramsey has struggled to make a big impact on the Gunners this term, but the 23-year-old insists that he is not concerned by any criticism that is aimed at him.

"I'm not worried. I know my qualities," he is quoted as saying by Sky Sports News. "I've had a few injuries this season and I'm just getting back.

"To be honest, I'm still not 100% physically there and it does take a bit out of me. It will take me a few more games to be back to my best and I'm not worried. Certain criticism from people is unfair."

Ramsey and his Arsenal teammates are back in action on Saturday night when they entertain Manchester United in the Premier League.