The Gunners trail 2-0 from the first leg and head to the Nou Camp looking to do what no European team has done in recent history, overcome a two-goal deficit away in the second leg to progress.
The odds are already stacked against Arsenal, but to make matters worse they have to do it against the reigning champions and a side who are favourites to complete another historic treble.
Quizzed on Arsene Wenger’s side’s chances, former Barca duo Bojan and Muniesa feels it is an impossible task for the North London side.
“No, impossible. Impossible,” Muniesa responded when asked if Arsenal can progress. “Barça, with Luis Enrique, don't need the ball so much. They have three bullets up front and they don't need to keep the ball. They don't give you a chance and they're in a really sweet moment.”
Bojad added: “Arsenal play really well and have a good team, but I don't think there is any team at Barça's level. Against Barcelona you could win a one-off game, but a two-legged tie, I don't see it.”
Arsenal’s season has come to a head in recent weeks as a FA Cup defeat to Watford and poor league form has left them with the Champions League being arguably their only chance left of silverware.
But they were caught out in the first leg; after playing well for an hour the Gunners tried to push for a goal and ended up being hit on the counter-attack with Lionel Messi grabbing a brace.
Wenger’s side will need to put in their best ever European performance if they have any hopes of turning it around, and even then it may not be enough with Barca’s front three in such prolific form,