Quite understandably, there are plenty of concerned Gooners out there....

Steven Shaw: Could Arsenal meet their Waterloo against this Swedish outfit?

Simon Jedryka: Ospina for Sunday then?

Craig Smith: Most worrying thing about this game is it shows how Arsenal can crumble against any team. Moreover, how poor their depth is

Actually, I do Jack Wilshere a disservice. He has been the one player looking to try to create something and he effortlessly weaves his way into the area, but Ostersunds FK clear as he tries to pick out a team-mate.

Based on this 40-minute showing so far, none of these Arsenal players are doing their prospects of playing in the League Cup final much good. They've had one shot on target and that came in the 34th minute.

David CL: This is laughable. Absolutely laughable. The worst thing is - as a long suffering Arsenal fan I am not surprised in the least. Shambles. Teach these kids how to defend & have some composure.

Chris Leonard: Arsenal FC have been looking for rock bottom for a while now....Maybe tonight they will find it!

Paulc1989: This isn't a miracle. Take away their nervy start in first leg and Ostersunds have been better than us in whole tie, first leg included. We are awful. No hope of winning Europa League even if we get through still!

Superb sliding block by Tom Pettersson to deflect Hector Bellerin's cross inside the area behind for a corner after good work by Jack Wilshere.

Ostersunds FK are putting everything into this at both ends of the pitch. Stunning performance by them so far.

Arsenal's twitter feed quite understandably playing it nice and straight when Ostersund scored their second.....

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Arsenal win a free-kick midway inside the Ostersunds FK half. It's a chance for the hosts to get the ball into the box and disrupt this bit of momentum the visitors have.

Henrikh Mkhitaryan whips the ball in and Danny Welbeck gets a good flick on, but it's straight at Aly Keita in the Ostersunds FK goal.

There was just 70 seconds between Ostersund's first and second goals - 70 seconds for a dream to become closer to reality.

Saman Ghoddos sends Hosam Aiesh away again down the right, Ghoddos continues his run into the box and Aiesh finds him but the forward tumbles as he attempts to turn his marker.

Ostersund are causing Arsenal some real trouble down the flanks.

Image source, Getty Images

Curtis Edwards has a go from outside the box. He hits it well enough and it is bouncing all the way - awkward if on target - but the ball flies just wide of David Ospina's post.

What Arsenal thought was perhaps going to be an easy night has suddenly turned into a very tricky one indeed.

They are going to have to work now but it's Ostersunds FK who are doing all the attacking. The belief is flowing through their players, who are pressing and closing down Arsenal at every opportunity.

Great noise form the away end too.

Matt VP: We were lucky it took them this long. Iwobi has been diabolical, Holding has been awful, Welbeck may as well not be playing.

Dave Bundy: Classic case of underestimating the opposition at the Emirates ! We have a real game on our hands now!

Tony Greaves: C is for Complacency

Chris Lord: I’d rather be battered by Bayern Munich than this happen

Christian Evans: Whether they win or lose it doesn't matter because Ostersunds FK can say they held a 0-2 lead at the Emirates! This is why I love football

This is better by Arsenal as Henrikh Mkhitaryan and Hector Bellerin link up down the right. Bellerin squares the ball for Jack Wilshere and he smacks a first-time effort at goal. Blocked.

Ken Sema shrugs off Hector Bellerin to open up a yard of space on the left side of the Arsenal box. He goes for goal, hitting an effort hard and low but David Ospina gathers at the second attempt.

Another corner for Arsenal as Hector Bellerin's cross is headed behind. The Gunners play it short and eventually all the way back to David Ospina, prompting boos from the home fans. They want to see their side give it a go with the pressure off.

Thomas Hollern: Would love to see Ostersund score the first goal tonight, just to liven things up a bit.

Mark is referring to Ostersunds midfielder Jamie Hopcutt - who started his career as a youth player at home-town club York City in 2010 before later joining Ossett Town.

In 2012 he moved to Sweden after a successful trial at Ostersunds.

Alex Iwobi shoots well over for Arsenal, who haven't been great so far.

You'd think they'd all be busting a gut to impress with the League Cup final around the corner.