Arsenal defender Per Mertesacker believes the Gunners didn't deserve anything from the game against Barcelona after they failed to find the net against the Catalan giants.

The German defender blames his side's failure to take their chances in front of goal for the 2-0 Champions League Round of 16 first leg loss to the reigning European champions.

He said: "When we conceded the first, then especially the second, it is tough for us now. We had to score at least one goal and that is why we do not deserve anything.

"You will never keep them quiet for 90 minutes, we managed it well in the first half and then in the second half had a good period of time with a couple of chances but we needed to score then and drop back. But we took more risks and then they scored, and it will be much more difficult.

"We tried our best but we didn't deserve it because we had enough chances to score at least one."