After coming up agonisingly short in last season's Champions League final, Arsenal begin what they hope will be a glorious European campaign at Napoli. The Gunners were beaten on penalties by Paris Saint-Germain in May, with Gabriel missing the decisive kick after a 1-1 draw. As for Napoli, their Champions League adventure was a big disappointment last term, as they finished in a lowly 30th place in the league phase.