The referee does the stretcher signal to the bench for Danny Welbeck and it's being brought on now. Pierre-Emerick Aubameyang is getting ready.

Image source, Getty Images

Fred, Devon: Smith-Rowe looks so confident on the ball, he's got a bright bright future ahead of him.

NowNaija: I started watching Arsenal during Wenger's failure era. Emery planted belief back to our team. They play nicely now, Unai's tactics.

Prudent-Ifeanyi: Emery has made Arsenal so difficult to beat. I heart his tactics for each game.

A lively start to this game for Danny Welbeck who gets a head onto Stephan Lichsteiner's cross but it's easily saved by the goalkeeper.

Welbeck has hurt himself though and is getting treatment.

Image source, Reuters

Amer Gojak has put Dinamo Zagreb 1-0 up against Spartak Trnava - the Croats could qualify today.

Sporting forward Fredy Montero is yet to a complete a pass - he's tried two. Danny Welbeck has completed both his attempts.

Takumi Minamino has put Red Bull Salzburg 2-0 up at Rosenborg, who have lost all their games so far.

Arsenal full-back Stephan Lichtsteiner dives in on Nani and it's a definite booking.

Sporting defender Jeremy Mathieu can be pretty clumsy and he trips Stephan Lichtsteiner, who fooled him with a dummy.

Emile Smith Rowe had been fouled in the build-up too.

Henrikh Mkhitaryan whips in a good free-kick, while Danny Welbeck heads wide.

Image source, Reuters

Arsenal almost lead. Good low cross by Matteo Guendouzi, which Danny Welbeck tries to turn home. Sporting defender Jeremy Mathieu actually turns it past his keeper but Sebastian Coates clears it off the line.

Sporting's Nemanja Gudelj fires a shot well over from miles out.

DJMannie: Watching Arsenal games with ease these days, gone are the days i used to have hypertension watching from minute 1.

A relaxing start for Arsenal fans?

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Good play by Emile Smith Rowe to lose a defender on the edge of the box but his 20-yard shot is over the bar.

Image source, Getty Images

Real Betis are 1-0 up against AC Milan, with PSG loanee Giovani lo Celso scorng. The Spanish side could go through today...

But they'd need Olympiakos to not win and the Greek club are leading Luxembourg minnows Dudelange 1-0.

Image source, Reuters

Alex Iwobi's cross for Henrikh Mkhitaryan is turned out for a corner by Sebastian Coates, but Arsenal can't do anything with the set-piece.

Now Mkhitaryan's low cross is held by the keeper.

Image source, Reuters

A big goal for Celtic as Kieran Tierney gives them the lead against RB Leipzig. They could go out if they lose tonight but it's 1-0 to the Bhoys.

Follow live coverage of that game here.

Sporting winger Abdoulaye Diaby runs down the right and rolls a pass across to Nani but Stephan Lichtsteiner reads it and clears the ball before the ex-Manchester United man can get there.

Image source, PA

Carl Jenkinson, making his second Arsenal appearance in almost two years, fires an ambitious shot over from 35 yards.

He's scored one goal in his previous 63 appearances for the Gunners.

Alex Iwobi spreads the ball out left to Danny Welbeck but his low cross hits the heel of a Sprting defender. Henrikh Mkhitaryan was in the box waiting for it.

Image source, Reuters

Japan forward Takumi Minamino has given Red Bull Salzburg a 1-0 lead against Rosenborg. The Austrian side could go through today - so long as Celtic don't win.

Image source, Reuters

Matteo Guendouzi gets away with one for Arsenal. He loses the ball and Sporting take too long to shoot from the edge of the box. When Nani finally does, it's at an Arsenal player.

Now at the other end, Danny Welbeck charges down Sporting keeper Renan Ribeiro, who takes an age to clear, but it bounces away.

Arsenal full-back Stephan Lichtsteiner's cross is blocked and then he fouls Nani, who goes flying to the turf.