Arsenal vs Sporting Lisbon - Champions League LIVE: Latest score, team news and updates as Mikel Arteta's injury-hit Gunners hold narrow edge as they aim to finish the job at the Emirates

Final throw of the dice?

Georgios Vagiannidis and Rafael Nel have been chucked on for the final few minutes.

Its now or never for Sporting.

That was the chance to seal it.

The ball is whipped over to Leandro Trossard at the back post, and he has the opportunity to win the tie.

It's a decent header, but he can only find the thick midriff of the post, and the ball bounces back off it.

Moments later, Gabriel Jesus hits the side-netting.

Sporting CP seem to have lost their sparkle.

They are running out of ideas on the counter, and now Arsenal seem to have woken up.

It feels like the Portuguese side are going to need to conjure up something special to take this to extra-time.

Now Arsenal are going for it.

Mikel Arteta brings on some firepower, with Leandro Trossard and Gabriel Jesus coming on.

Meanwhile, Maxi Araujo becomes the first player to be booked for smashing into Max Dowman.

Finally, a decent decision from the referee.

Joao Simoes' first contribution is to tug at the hair of Max Dowman...

That got Lisandro Marinez sent off for Manchester United against Leeds, but this referee doesn't even think it's a foul.

Mikel Arteta is going balmy, and I can see why. He needs to be careful, though, as he is already on a booking.

This ref has been pretty pants tonight, I have to say.

Another change from Sporting.

Joao Simoes started last week, and now he is being introduced in place of Morita.

I believe Arsenal are going to make some changes soon as well. But not yet.

Arsenal have a corner, and that has certainly woken up the fans.

They have been very quiet in this second half, understandably so, and I bet they see set-pieces as a bit of respite.

The latest one causes some chaos in the box, but a foul is eventually given on the goalkeeper.

Sporting have decided to turn the screw...

They are making a couple of changes; Quenda is replacing Geny Catamo, and Daniel Braganca is on for Pedro Goncalves.

Can they spur Sporting on?

Arsenal need to wake up here, they are sleepwalking toward a bad result if they don't.

It's all Sporting now, and the crowd can sense something is about to go wrong. They are a bag of nerves.

The Gunners seem to have lost all of their confidence.

Meanwhile, Mikel Arteta has just been booked for barking - no, not literally - a little too loudly at the officials.

Maxi Araujo seems to be at the centre of everything that Sporting do well tonight.

He's up off the floor and gunning for Arsenal again, pulling the trigger from 20 yards out.

It doesn't trouble David Raya, though.

Wait, what?

Is that not a penalty?

Maxi Araujo is down after seemingly being pushed by Cristhian Mosquera at the back post.

But the referee says no penalty. I'm surprised...

Oh dear...

It isn't just a knock; Noni Madueke isn't going to be able to continue after that challenge.

The winger hobbles off in the arms of the physio and is replaced by teenage sensation Max Dowman.

What a moment for the 16-year-old - playing in a home Champions League quarter-final.