Per Mertesacker believes Arsenal are more than capable of beating Borussia Dortmund when they visit Signal Iduna Park on Wednesday.
A late Robert Lewandowski goal condemned Arsenal to their first defeat of their European campaign in the reverse fixture last month, leaving the two sides, along with Napoli, level on six points at the top of Group F.
Mertesacker admits the Gunners will have to learn their lessons from that game, but insists the Gunners can still win in Germany.
"I think we will continue to receive enough points to stay on top of the league and the Champions League as well"
"I think the team have to take their lesson but we are still good enough to compete with last year's finalists,” he said. "That's a good thing for us so we have to keep our chins up and think we can do it.
"Both teams know that we are capable of beating each other. We have to be aware in Dortmund because it's even harder to play there.
"Two years ago we just managed to draw there, we were very lucky so that will be a tough challenge. But when you look at the numbers from Tuesday's game we are capable of achieving something special and we are good enough to go there and win."
Mertesacker also believes November will be vital if Arsenal are to remain in contention both domestically and in the Champions League.
"We want to be as consistent as possible during the period until December or until the end of the year,” said Mertesacker. "That will be important in order to compete with the top four or five opponents for the top position.
"We are really happy with our situation at the moment and I think we will continue to receive enough points to stay on top of the league and the Champions League as well."