Laurent Koscielny believes Arsenal have the potential to progress through to the latter stages of the Champions League.

The 26-year-old defender has missed one match so far this season for the Gunners, who have endured a tumultuous start to the campaign. The 8-2 mauling at Manchester United was undoubtedly Arsenal's low point but Koscielny believes the side are capable of impressing in European football's elite competition, especially if they keep the back line tight.

"It is very important to defend together," he said of Tuesday night's match against Borussia Dortmund. "We have the quality. I think we can do something in this competition."

He added: "It is in our head to perform. We have intelligent players and we put the effort in on the pitch.

"We have new players who have arrived at the club, and it is important for us that they can provide some creativity technically in midfield."

Koscielny is likely to start at the heart of defence alongside new signing Per Mertesacker.

The Germany international was signed on deadline day from Werder Bremen and the Koscielny believes he adds another dimension to Arsenal's defence.

"He is a very good defender with a lot of experience," he said. "He is a German international, and is really important for us on the pitch.

"He is tall, which is good for our physical side. He will help me on the pitch with defensive corners.

"With Thomas [Vermaelen] it is very different. We must defend very well, and make a clean sheet more possible."

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#Arsenal
#European News
#Premier League
#UEFA Champions League
#Manchester United
#Laurent Koscielny
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