Follow Mail Sport's live blog as Isaan Khan answers all the big questions regarding Arsenal.
13:07
It has been smooth sailing in the Champions League for Arsenal, but Lens beat them in the first game, what will Arteta have learned from that?
ISAAN KHAN: He will have learnt that each Champions League fixture is a battle in its own right, no matter the league form of the opposition.Lens are sixth in Ligue 1, and have only won five of their 13 league matches.Yet when Arsenal went to play them away from home, Lens were truly up for it and put up a mighty fight.