Martin Odegaard has urged Arsenal to "stick together" after their recent failures as they aim to defy the odds in Wednesday's decisive Champions League semi-final showdown with Paris Saint-Germain. The Gunners head to the Parc des Princes faced with the daunting task of having to beat the French champions to reach the Champions League final for the second time in their history. Mikel Arteta's side trail 1-0 from the first leg after Ousmane Dembele's winner in north London. PSG have already eliminated Premier League champions Liverpool in the last 16 and Aston Villa in the quarter-finals, after beating Manchester City in the group phase.