WIDE!
Lacazette plays it in towards Pepe on the right side of the six-yard box, but the angle is against him and he skews his effort high and wide of the target.
88'
Arteta makes yet another change, with Aubameyang going off for Lacazette.
83'
GOAL: OLYMPIACOS 1-3 ARSENAL (ELNENY)
79'
Goal Gabriel Magalhães.
77'
El-Arabi, is withdrawn by Martins now and replaced up front by Hassan.
73'
Arsenal are just lacking a little bit of sharpness in their passing at the moment. They can't seem to take advantage of the spaces that appear in the Olympiacos defence.
71'
BLOCK!
Odegaard and Saka link up on the right and the former is found in a pocket of space inside the area. He shifts it onto his left and blasts at goal, but it's blocked away!
67'
CLOSE!
Randjelovic crosses low into the box for El-Arabi, who fires low towards the bottom-right corner, but it's deflected just around the post by Bellerin!
63'
Arsenal have conceded twice from individual errors in their last two Europa League games, with Ceballos' mistake allowing Rafa Silva to score for Benfica in the last round.
58'
Goal Youssef El-Arabi
52'
Arsenal are back in command and Partey finds Tierney with a lovely switch to the left. The full-back finds Saka, but he can't wriggle past his man and Olympiacos have the ball.
46'
Valbuena comes off for Fortounis and Reabciuk is replaced by former Watford man Holebas.
46'
Second Half begins..
H-T'
OLYMPIACOS 0-1 ARSENAL
43'
Yellow Card to Gabriel Magalhães.
34'
Goal from long range! Arsenal are ahead.
31'
Arsenal are probing patiently, but Olympiacos have managed to keep Arsenal from creating anything of note in the last few minutes.
29'
Arsenal are controlling the game well now, keeping the ball as they wait for their next opportunity to strike. They look comfortable in possession.
25'
Arsenal have a third free-kick in shooting range, but this time it's to the right of goal. Xhaka takes with his left, but it's straight into the wall.
22'
M'Vila slides in recklessly on Saka on the edge of the box and gets none of the ball, earning himself a deserved yellow card.
17'
SAVE!
Lala fouls Willian on the edge of the box and the free-kick is in a promising position. David Luiz takes it, but his dipping strike is straight down the middle and Sa makes the save!
13'
Bruma takes on a very ambitious effort from an improbable angle and distance, and predictably scuffs it well wide of the target.
11'
Arsenal press Olympiacos high up the field and it's punted over the top into the space left in behind, but Leno races out of his box to deal with it and finds Tierney, who clears his lines.
9'
Arsenal have absolutely dominated possession so far, enjoying nearly 78% of the ball and looking very assertive and confident.
5'
Aubameyang's header is deflected but Sa makes an incredible acrobatic save to deny the header, which then strikes the bar.
3'
MISS!
What a chance for Arsenal! Tierney cuts a low ball back towards Odegaard, who is unmarked in the box, but
Ødegaard scuffs his shot and drags it wide of the far post
1'
First Half begins..
'
Arsenal Starting XI To Face Olympiacos: Leno; Bellerín, Luiz, Gabriel, Tierney; Partey, Xhaka; Saka, Ødegaard, Willian; Aubameyang.
Olympiacos - Lineup
Lacazette plays it in towards Pepe on the right side of the six-yard box, but the angle is against him and he skews his effort high and wide of the target.
Odegaard and Saka link up on the right and the former is found in a pocket of space inside the area. He shifts it onto his left and blasts at goal, but it's blocked away!
Randjelovic crosses low into the box for El-Arabi, who fires low towards the bottom-right corner, but it's deflected just around the post by Bellerin!
Lala fouls Willian on the edge of the box and the free-kick is in a promising position. David Luiz takes it, but his dipping strike is straight down the middle and Sa makes the save!
What a chance for Arsenal! Tierney cuts a low ball back towards Odegaard, who is unmarked in the box, but
Ødegaard scuffs his shot and drags it wide of the far post
ARSENAL - Lineup