Bayern felt aggrieved to have lost in such a manner, and Mertesacker feels the German giants will be looking to gain revenge when the two sides meet at the Allianz Area on Wednesday.
“They will be angry. We are the first team who really challenged them and beat them. They will be on the ball and try to show that they are back and better than us. They are clever, the Germans,” he said.
Bayern head into the clash having seen their 100% winning record in the Bundesliga snapped by a stubborn Eintracht Frankfurt outfit who held Pep Guardiola’s men to a 0-0 draw on Friday.
Arsenal, on the other hand, bounced back from their League Cup exit with a highly impressive 3-0 victory over Swansea City at the Liberty Stadium.
Arsene Wenger’s men will look to adopt a similar counterattacking style in Munich, though they must be wary of conceding an early goal and seeing their game plan go through the window.
With the club’s precarious position in the group table, a draw would be a good result though qualification would still be possible if they were to be beaten.