Unfortunately, that chance is not an easy one. Arsene Wenger leads his side to Wembley, a stadium that has been a happy one in recent years, to face perhaps the best team of the Premier League era: Pep Guardiola's Manchester City.
Though there's a lot of spotlight on Cech for not saving penalties - an issue Arsenal could go a long way to solving by not giving as many away - the former Chelsea man has been pretty solid all round this season.
For three players in particular, Thursday offers a real chance.
The frustration among the Arsenal fans at the current predicament is understandable, as the same errors appear to blight the team. But his stock has certainly fallen.
Only five English managers have won at the Emirates in all competitions (Alan Curbishley, Phil Brown, Harry Redknapp, Michael Appleton and Garry Monk), with only Appleton doing so in a non-Premier League match (February 2013, Arsenal 0-1 Blackburn in the FA Cup).
He said: "I think he has done much better than I have and he's knowing very well what to do". That is why, when he has to play, he is ready.
Meanwhile, Ostersunds also come into the second-leg clash on the back of the 3-0 result last week.
The Welshman has been amongst our most consistent performers this season, and bagged his first senior hat/trick this month also, but has failed to feature since due to a groin issue.
"He [Ospina] played in the whole competition".
"On Sunday we were off and since Monday he was in bed". The Sun reports that Jorginho could be "sacrificed" by Napoli with the Serie A side keen to sign Lucas Torreira from Sampdoria.
Thirty-seven minutes into their full debut together for Arsenal, and Mkhitaryan has played the ball through for Aubameyang to score, just like old times. It's his favoured position and one that Wenger sees him in going forward.
Let us know in the comments. "He has a great future".
A win on Sunday accomplishes the first goal in Manchester City's treble ambitions.
But the adventure looks set to end on Thursday night, with Potter conceding Ostersund require an upset of the ages in north London.