Arsenal winger Alex Oxlade-Chamberlain admits he has a difficult job on his hands to break back into the Gunners' first team.

The 20-year-old featured in the club's opening-day defeat to Aston Villa, but was substituted off at half time after picking up a knee injury which has kept him out of action for the last two months.

Oxlade-Chamberlain is expected to remain sidelined until the end of next month - and he concedes that, with the team currently flying high in the Premier League table, regaining a place in the first team won't be easy.

"Things can change quickly in football," the 20-year-old told The Sun. "When you're at a great club like Arsenal, which has the strength in depth it has, you know you've got to raise your levels to stand a chance of playing.

"If you look at us now, if everyone was fit we'd have an unbelievably strong squad and it will be a huge challenge to get back in the team.

"But I'm confident in my ability so, when I get the chance, I will have to take it."

Arsenal now possess, arguably, the strongest midfield in the Premier League following the £42.4m summer signing of Mesut Ozil from Real Madrid.

While at international level, Oxlade-Chamberlain faces a similar battle to win his place back in England's starting line-up following the emergence of Tottenham winger Andros Townsend.

"To see that on his debut was a real eye-opener and it has given us another dimension. He's made it hard for every other attacking player in that position to get in, not just me," Oxlade-Chamberlain added.

"Competition has gone up again but you can't feel frustrated. If you think like that, you start losing focus.

"I know what I need to be doing to be in the squad and it's the same at Arsenal."

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