Per Mertesacker remains confident that Arsenal can progress to the knockout stages of the Champions League, after their 3-0 win over Dinamo Zagreb on Tuesday.
"We dropped a lot of points which is disappointing but there is still a chance so we believe. It is a nightmare how we played the first two games", he admitted. "We have to face the truth and that is that we have to score more than one goal against Olympiakos. We have a good chance. We believe that we can score goals. You saw that we are always capable of doing that. Let's go there without fear, respect our opponent but keep patient until the end".