Cologne may be in poor form, but Wenger expects a tough match against them. He also said the club made the right choice to stand by their manager.

Cologne sit bottom of the Bundesliga table with just two points from 12 games so far this season. Despite this bad form, they’ve kept faith with their manager, Peter Stoger.

Wenger believes the German side have made the right decision to not change managers, and expects a challenging game against them.

“For a coach it is always difficult,” Wenger said, as reported by Football London. “If you don’t win you are always under pressure. “But I think that Koln have a good possibility, maybe tomorrow, with less pressure, to maybe play a little bit more freely.

“It’s going to be a dangerous opponent for us, that’s for sure. It’s difficult to understand why Koln are further down in the table. Against Mainz, I saw that match, they had a little bit of bad luck but I can’t understand why they are at the bottom.

“I can only support the club to keep the coach. He showed great qualities last season. Why not this season? They lost [Anthony] Modeste. Another big factor for the club. It’s a strong club and they should keep the coach of course.”

Cologne did surprise Arsenal at the Emirates Stadium earlier this season. Colombian striker Jhon Cordoba gave them the lead with a fifty-yard lob over David Ospina. Arsenal, though, rallied with three second-half goals to get their Europa League campaign up and running.

Cologne sit bottom of Group H as well, but are just two points off second-placed Red Star Belgrade, who they play on the final matchday. A win against Arsenal would put them in a strong position to qualify for the round of 32.

Arsenal, meanwhile, have already qualified for the knockout rounds and will now be looking to win the group. There can be little room for complacency, especially against a side with so much to play for.