The good news for Xabi Alonso's side is that the manager's personnel choices paid off, even if the reward felt like something out of Carlo Ancelotti's version of Real Madrid than the new look Alonso is trying to instill.

Arnold, and Dani Carvajal are all missing from the matchday squad, leaving Xabi Alonso’s side to face the Italian giants with a depleted backline.

The UEFA Champions League picture has become slightly clearer after a third round of fixtures. Arsenal, PSG, Bayern Munich, Real Madrid, and Inter Milan all maintained their perfect records, with the Gunners and the Nerazzurri still having yet to concede a goal.

Chasing an automatic qualifying position in the Champions League table, Arsenal have a difficult task as they host Atletico Madrid at the Emirates on Tuesday. Mikel Arteta has engineered a pair of victories so far through two league phase games, while Diego Simeone has three points from Atleti's opening two European games.