Before every Arsenal fixture, we’ll bring you a Scouting Report on the Gunners’ next opponents.
Former Arsenal midfielder Stewart Robson will give his pre-match view and you can get his post-match verdict in our Talking Tactics feature on Arsenal Player.
Arsène Wenger and his side travel to Marseille in the Champions League on Wednesday so, to find out more, we also asked journalist Julien Laurens for his thoughts and analysis.
"Arsenal were forced to retreat and defend deeply against Dortmund. This wasn`t Wenger`s game plan but a result of being outplayed in Germany in the first half. So I`d expect Arsenal to try and control possession by overloading midfield while also counter-attacking with pace when they regain the ball in deeper areas.
"Assuming they are fit, Arsenal will need to be aware of Remy`s pace, the creativity of Lucho and the technical ability of Ayew."
JULIEN LAURENS, LE PARISIEN
"They play 4-3-3, a bit like Arsenal. They usually use one playmaker, Lucho Gonzalez, and a holding midfielder in Alou Diarra; two wingers with Mathieu Valbuena on the right and Andre Ayew on the left and then Loic Remy up front.
"Remy is a very quick centre forward who used to play as a winger like Thierry Henry. He is now reinventing himself as a centre forward, makes good runs, is good in front of goal and has improved a lot. He is the main threat.
"On the wings Valbuena and Ayew are two very skilful players, both reliable and very good technically. Then behind they have Lucho, the Argentine international, who is very good with the ball and can give very good service to the front three.
"They are also strong from set-pieces, with big centre halves that like to go up for corners and free-kicks. Basically from the start of the season they have relied a lot of the counter-attack - they are not very good at holding onto the ball. They are very good on the break, however.
"Arsenal will have the ball quite a lot I would have thought, with Marseille looking to use that against them. Their defenders are maybe not as quick as Remy and Marseille will be keen to look for space behind the back four when they can.
"It's very odd that they have two different faces - one for the Champions League and one for Ligue 1. In Europe they have two wins from two and have been really solid defensively. Against Dortmund they struggled a bit with the German side hitting the post and the bar, but they were very efficient and scored three goals almost with three chances. That was it.
"In the league they have struggled to be efficient and at the back they are not solid enough. It is weird. It seems that the Champions League allows them to play at a much higher level and they seem much more motivated by it.
"I know Arsenal are maybe not at the top of their game at the moment but I can still see them winning. I am not impressed at all by Marseille, even against Dortmund. Despite being at home I can really see Arsenal winning this - Robin van Persie can really hurt them. In midfield they will have a lot of possession and if they can use the ball properly they should be fine."