Arsenal v Bayern preview: Key stats and player info

Two of the tournament favourites meet in a heavyweight clash on Wednesday. As well as being a tussle between two of the three sides with a 100% record during this Champions League season - Inter Milan being the other - the fixture also pits the best defence against the best attack.Arsenal are the only team yet to concede in the competition, while no side has scored more than Bayern's 14 goals in four games. The Gunners are on an unbeaten run of 15 matches, winning 13 of those.However, they have