Arsenal battled to a 0-0 draw in their opening Champions League game against Atalanta, which could not have come at a tougher time. Mikel Arteta led Arsenal to victory in the North London derby before it was confirmed that captain Martin Odegaard would face a lengthy spell on the sidelines. With a crucial clash in the title race against Manchester City on Sunday, this was a brutal schedule for Arsenal, and a trip to Atalanta in between two domestic away trips made things difficult. Arsenal started well against Atalanta, but could not find the breakthrough, before the hosts took control and eve…