FULL-TIME: ARSENAL 0-1 OLYMPIACOS (AGGREGATE SCORE 3-2)
90' +2
K. Tierney gets yellow.
Bruma is penalised for a foul throw and Tierney is then booked for taking too long over the subsequent throw.
89'
Olympiacos, despite being a man down, are throwing everyone forward as they attempt to grab the two goals they need to qualify tonight.
86'
G. Xhaka gets yellow.
Xhaka is booked now for a poor challenge on Olympiacos substitute Bouchalakis.
84'
A. Bouchalakis enters the game and replaces K. Fortounis.
K. Lala enters the game and replaces O. Reabciuk.
Reabciuk also leaves the field for Olympiacos, with Lala coming on to replace him at full-back.
Fortounis is now replaced by Bouchalakis as Martins reshuffles his team following the red card.
82'
O. Ba gets yellow.
O. Ba gets a second yellow card and is sent off.
C. Chambers enters the game and replaces Héctor Bellerín.
Ba goes into the book as he catches Martinelli in the face near the touchline as he attempts to win the ball.
Meanwhile, Chambers replaces Bellerin at right-back in the second change as Arteta looks to freshen things up.
HE'S OFF! Just seconds after receiving his first yellow card, Ba punches the ball in frustration and it hits Martinelli, leading the referee to show him a second yellow card and send him off! Olympiacos are down to 10 men!
81'
Gabriel Martinelli enters the game and replaces E. Smith Rowe.
Arteta makes a second double change now, with Smith Rowe heading off the field for Martinelli in the first alteration.
74'
Arsenal have really struggled to keep the ball in this half and have invited unnecessary pressure due to sloppy passes on numerous occasions. They need to show more composure and control the contest.
72'
Y. M'Vila gets yellow.
M'Vila arrives late to challenge Pepe - who is already being pulled back - and catches the winger on the top of the foot with his studs, meaning he goes into the referee's book.
67'
Arsenal win a corner down their left and Odegaard lofts it into the middle where Bellerin meets it, but he can't steer the header on target and it's high and wide.
Minute
Description
65'
Olympiacos have a free-kick in a very promising position to the right of goal, but Fortounis' effort is straight into the wall and Arsenal get it away.
63'
Bruma enters the game and replaces G. Masouras.
Masouras is the second player to be replaced, with Randjelovic replacing him in support of El-Arabi.
62'
L. Ranđelović enters the game and replaces T. Androutsos.
Martins makes a double-change of his own now, with Androutsos coming off for Bruma out wide in the first alteration.
57'
T. Partey enters the game and replaces Mohamed Elneny.
M. Ødegaard enters the game and replaces Dani Ceballos.
The second change also affects the midfield, with Odegaard coming on to replace Ceballos behind Aubameyang.
Arteta makes the first of two changes now, bringing Elneny off for Partey in the midfield pivot alongside Xhaka.
55'
Arteta is not at all pleased with his side's performance at the start of this half and is readying some changes. He wants far more control from his men.
51'
Y. El-Arabi has scored a goal for Olympiakos! Assist by G. Masouras.
GOAL!!! OLYMPIACOS ARE AHEAD! El-Arabi has scored against Arsenal again! The Gunners lose the ball high up and are caught out as Olympiacos break at them. Masouras feeds El-Arabi on the left side of the box and he cuts inside David Luiz with ease before lashing a shot that deflects off Gabriel, flies past Leno and goes in! It's 1-0 to Olympiacos!
Masouras carried the ball into a dangerous area, leading Olympiacos' counter-attack before feeding El-Arabi in a dangerous position.
46'
We're back underway for the second half!
45' +3
HALF-TIME: ARSENAL 0-0 OLYMPIACOS
45'
Holebas clatters through the back of Pepe and seems bewildered at the referee's decision to award a free-kick. Pepe has looked bright in patches so far but has often been halted by a foul or a poor touch.
43'
Aubameyang uses his searing pace to get to the ball and burst away on the counter down the right before picking out a perfect pass to Pepe in the middle, but the winger's first touch lets him down and he's pounced on by the retreating Olympiacos defenders.
41'
Pepe tussles with Androutsos as he looks to race onto the loose ball and counter following an Olympiacos corner, but the referee blows for what the Ivorian feels to be a soft foul.
39'
Ceballos and Smith Rowe have briefly interchanged, with the former now on the left wing and the latter in a more central position as they look to unsettle the Olympiacos defence.
37'
Ceballos adds some invention to Arsenal's attack as he plays a sharp one-two with Aubameyang on the edge of the box before drifting out to the left and backheeling into Smith Rowe, but the youngster is crowded out and Olympiacos get it away.
32'
Olympiacos have had the majority of the ball in the last five minutes or so but it's all been a little safe and slow. They're not moving it sharply enough to unsettle the Arsenal defence.
30'
Pepe dances past a couple of challenges and looks as though he might get in behind on the right, but he's halted by the final defender, who nicks the ball away.
28'
Olympiacos put some pressure on the Arsenal box but can't create anything meaningful and the Gunners try to break, but Bellerin is caught on the ball and the visitors have it back. They're growing into the game now.
26'
Olympiacos are enjoying a rare spell of possession in the Arsenal half and have pushed high, but a sloppy pass gives the ball away and they are forced to retreat.
22'
There's a brief stoppage as Camara catches Bellerin on the top of the foot as the pair compete for a bouncing ball, but the Arsenal defender appears to be okay and the game resumes.
18'
Gabriel rises highest to meet the resulting corner, but his header towards the top-left corner lacks power and Sa holds onto it with ease.
15'
Tierney has been very busy on Arsenal's left flank, bombing forward with regularity and beating his man before swinging a cross into the middle. He's an important attacking outlet for the Gunners.
13'
Ba fouls Tierney as the Arsenal left-back bursts down the touchline and the free-kick is in a promising position. It's whipped into the middle, but Olympiacos get it clear with confidence.
11'
Aubameyang is pulling very wide out to the left when Arsenal are building, either creating an overload on that side or allowing Smith Rowe to drift inside. There's been plenty of fluidty and movement in Arsenal's forward line during these early stages.
9'
Pepe ghosts past Reabciuk and looks to break away down the right with purpose, but the Olympiacos wing-back grabs hold of him and halts his progress at the cost of a free-kick.
7'
The pair trudge to the sidelines for some treatment, meaning both teams are temporarily down to 10 men. Thankfully, neither player will be forced off and they come back onto the field after just a few moments.
3'
A few sloppy passes prevent Arsenal from controlling the opening stages of this one as they might like, with Olympiacos settling into possession.
1'
We're underway at Emirates Stadium!
Hello and welcome to our LIVE coverage of the Europa League round of 16 second-leg clash between Arsenal and Olympiacos at Emirates Stadium in London.
Arsenal hold a 3-1 lead after a convincing win in Greece, meaning Olympiacos will need to score at least three times themselves tonight to have any chance of progressing to the next round.
Arsenal XI (4-2-3-1): Bernd Leno; Hector Bellerin, David Luiz, Gabriel Magalhaes, Kieran Tierney; Mohamed Elneny, Granit Xhaka; Nicolas Pepe, Dani Ceballos, Emile Smith Rowe; Pierre-Emerick Aubameyang.
Arsenal substitutes: Martin Odegaard, Thomas Partey, Rob Holding, Gabriel Martinelli, Reiss Nelson, Calum Chambers, Cedric Soares, Mat Ryan, Pablo Mari, Arthur Okonkwo, Alexandre Lacazette, Eddie Nketiah.
Olympiacos XI (3-4-3): Jose Sa; Sokratis, Ousseynou Ba, Jose Holebas; Thanasis Androutsos, Yann M'Vila, Mohamed Camara, Oleg Reabciuk; Giorgos Masouras, Youssef El-Arabi, Konstantinos Fortounis.
With the aggregate score still 3-1 in Arsenal's favour, the Gunners won't be too displeased with the way the game has gone thus far. However, Olympiacos are yet to demonstrate any signs of overturning the deficit, and Martins will certainly expect better from his team in the second half.
Arsenal face West Ham away from home next, while Olympiacos host Aris.
Thank you for joining our coverage, we hope you enjoyed the game. Until next time, goodbye!
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