BOOKING: Gabriel Strefezza
Shot blocked. Daniel Podence - Olympiakos - shot with right foot from outside the box is blocked. Assist - Mehdi Taremi.
Martín Zubimendi - Arsenal - won a free kick in defence.
Gabriel Strefezza - Olympiakos - receive yellow card for a foul.
Fouled by Gabriel Strefezza - Olympiakos
Goal! Arsenal 2, Olympiakos 0. Bukayo Saka - Arsenal - shot with left foot from the left side of the box to the left corner. Assist - Martin Ødegaard with a through ball.
Shot blocked. Bukayo Saka - Arsenal - shot with left foot from the left side of the box is blocked. Assist - Martín Zubimendi.
Fourth official has announced 5 minutes of added time.
New attacking attempt. Ayoub El Kaabi - Olympiakos - shot with the head from the centre of the box is saved in the top centre of the goal by David Raya - Arsenal Assist - Daniel Podence with a cross.
Myles Lewis-Skelly - Arsenal - won a free kick in defence.
Fouled by Daniel Podence - Olympiakos
Handball by Viktor Gyökeres - Arsenal
Substitution - Olympiakos. Giulian Biancone for Panagiotis Retsos.
Substitution - Olympiakos. Gabriel Strefezza for Chiquinho.
SUBSTITUTION: Gabriel Strefezza COMES ON FOR Chiquinho
SUBSTITUTION: Christos Mouzakitis COMES ON FOR Santiago Hezze
SUBSTITUTION: Giulian Biancone COMES ON FOR Panagiotis Retsos
Substitution - Olympiakos. Christos Mouzakitis for Santiago Hezze.
Corner - Olympiakos. Conceded by David Raya.
Missed chance. Chiquinho - Olympiakos - shot with left foot from a diffucult position on the right missed to the left. Assist - Daniel Podence.
Shot blocked. Martin Ødegaard - Arsenal - shot with right foot from few metres is blocked.
Corner - Arsenal. Conceded by Panagiotis Retsos.
New attacking attempt. Martin Ødegaard - Arsenal - shot with left foot from the centre of the box is saved by goalkeeper in the centre of the goal by Konstantinos Tzolakis - Olympiakos Assist - Bukayo Saka.
Corner - Olympiakos. Conceded by Cristhian Mosquera.
Shot blocked. Ayoub El Kaabi - Olympiakos - shot with the head from the centre of the box is blocked. Assist - Chiquinho with a cross.
Fouled by Bukayo Saka - Arsenal
Francisco Ortega - Olympiakos - won a free kick in defence.
Declan Rice - Arsenal - receive yellow card for a foul.
Myles Lewis-Skelly - Arsenal - won a free kick in defence.
Fouled by Chiquinho - Olympiakos
Corner - Arsenal. Conceded by Ayoub El Kaabi.
Martin Ødegaard - Arsenal - won a free kick on the right wing.
Fouled by Lorenzo Scipioni - Olympiakos
SUBSTITUTION: Lorenzo Scipioni COMES ON FOR Dani García
Substitution - Arsenal. Cristhian Mosquera for Gabriel Magalhães - injury.
Substitution - Olympiakos. Lorenzo Scipioni for Dani García.
SUBSTITUTION: Cristhian Mosquera COMES ON FOR Gabriel Magalhães
Delay over. They are ready to continue.
SUBSTITUTION: Eberechi Eze COMES ON FOR Gabriel Martinelli
SUBSTITUTION: Bukayo Saka COMES ON FOR Leandro Trossard
Substitution - Arsenal. Bukayo Saka for Leandro Trossard.
Delay in match - injury Gabriel Magalhães - Arsenal
Substitution - Arsenal. Eberechi Eze for Gabriel Martinelli.
Shot blocked. Costinha - Olympiakos - shot with right foot from outside the box is blocked.
Leandro Trossard - Arsenal - won a free kick in defence.
Fouled by Costinha - Olympiakos
Offside - Olympiakos. Ayoub El Kaabi is in offside.
Shot blocked. Leandro Trossard - Arsenal - shot with right foot from the centre of the box is blocked. Assist - Martin Ødegaard.
Fouled by Lorenzo Pirola - Olympiakos
Gabriel Martinelli - Arsenal - won a free kick in defence.
Substitution - Olympiakos. Mehdi Taremi for Gelson Martins.
Missed chance. Mehdi Taremi - Olympiakos - shot with the head from the centre of the box goes high. Assist - Chiquinho with a cross .
SUBSTITUTION: Mehdi Taremi COMES ON FOR Gelson Martins
BOOKING: Martín Zubimendi
Gelson Martins - Olympiakos - won a free kick on the right wing.
Martín Zubimendi - Arsenal - receive yellow card for a foul.
Fouled by Martín Zubimendi - Arsenal
Fouled by Santiago Hezze - Olympiakos
Myles Lewis-Skelly - Arsenal - won a free kick in attack.
Offside - Olympiakos. Ayoub El Kaabi is in offside.
Gabriel Magalhães - Arsenal - receive yellow card.
Substitution - Arsenal. Declan Rice for Mikel Merino.
BOOKING: Gabriel Magalhães
Substitution - Arsenal. Jurriën Timber for Ben White.
SUBSTITUTION: Declan Rice COMES ON FOR Mikel Merino
SUBSTITUTION: Jurriën Timber COMES ON FOR Ben White
Myles Lewis-Skelly - Arsenal - won a free kick in defence.
Fouled by Costinha - Olympiakos
Delay in match - injury Mikel Merino - Arsenal
Delay over. They are ready to continue.
Missed chance. Leandro Trossard - Arsenal - shot with right foot from the left side of the box missed. Assist - Mikel Merino.
Corner - Olympiakos. Conceded by Ben White.
Shot blocked. Gelson Martins - Olympiakos - shot with right foot from a diffucult position on the left is blocked. Assist - Daniel Podence.
Gabriel Martinelli - Arsenal - won a free kick in defence.
Fouled by Santiago Hezze - Olympiakos
Shot blocked. Santiago Hezze - Olympiakos - shot with left foot from outside the box is blocked. Assist - Chiquinho.
Fouled by Myles Lewis-Skelly - Arsenal
Offside - Olympiakos. Daniel Podence is in offside.
Gelson Martins - Olympiakos - won a free kick in defence.
Fourth official has announced 2 minutes of added time.
Mikel Merino - Arsenal - won a free kick in defence.
Second Half starts Arsenal 1, Olympiakos 0.
First Half ended - Arsenal 1, Olympiakos 0.
Fouled by Francisco Ortega - Olympiakos
Chiquinho - Olympiakos - won a free kick on the left wing.
Fouled by Martín Zubimendi - Arsenal
Gelson Martins - Olympiakos - won a free kick in defence.
Fouled by Martín Zubimendi - Arsenal
Missed chance. Leandro Trossard - Arsenal - shot with right foot from the centre of the box goes high. Assist - Gabriel Martinelli with a cross.
Martin Ødegaard - Arsenal - won a free kick in attack.
Fouled by Santiago Hezze - Olympiakos
Missed chance. Viktor Gyökeres - Arsenal - shot with right foot from the centre of the box goes high. Assist - Leandro Trossard.
Martin Ødegaard - Arsenal - won a free kick in defence.
Fouled by Santiago Hezze - Olympiakos
Handball by Gabriel Magalhães - Arsenal
Fouled by William Saliba - Arsenal
Konstantinos Tzolakis - Olympiakos - won a free kick in defence.
Fouled by Mikel Merino - Arsenal
Costinha - Olympiakos - won a free kick in defence.
Corner - Arsenal. Conceded by Costinha.
Gelson Martins - Olympiakos - won a free kick in defence.
Fouled by Myles Lewis-Skelly - Arsenal
Shot blocked. Martin Ødegaard - Arsenal - shot with left foot from outside the box is blocked. Assist - Mikel Merino.
Shot blocked. Leandro Trossard - Arsenal - shot with right foot from the left side of the box is blocked. Assist - Mikel Merino.
Missed chance. Viktor Gyökeres - Arsenal - shot with left foot from the left side of the box is high and wide to the left. Assist - Martin Ødegaard with a through ball.
Fouled by Costinha - Olympiakos
Viktor Gyökeres - Arsenal - won a free kick in defence.
Gelson Martins - Olympiakos - won a free kick on the left wing.
Fouled by Ben White - Arsenal
BOOKING: José Luis Mendilibar
Offside - Arsenal. Viktor Gyökeres is in offside.
Missed chance. Gabriel Martinelli - Arsenal - shot with right foot from the centre of the box missed. Assist - Ben White.
Offside - Arsenal. Mikel Merino is in offside.
Corner - Olympiakos. Conceded by Leandro Trossard.
Corner - Olympiakos. Conceded by David Raya.
New attacking attempt. Daniel Podence - Olympiakos - shot with right foot from the centre of the box is saved in the top right corner by David Raya - Arsenal Assist - Chiquinho with a cross.
Fouled by Mikel Merino - Arsenal
Shot blocked. Martin Ødegaard - Arsenal - shot with left foot from the centre of the box is blocked. Assist - Ben White.
Gelson Martins - Olympiakos - won a free kick in attack.
Fouled by Daniel Podence - Olympiakos
Ben White - Arsenal - won a free kick in defence.
GOAL! Gabriel Martinelli!
Goal! Arsenal 1, Olympiakos 0. Gabriel Martinelli - Arsenal - shot with left foot from few metres to the left corner.
New attacking attempt. Viktor Gyökeres - Arsenal - shot with left foot from the centre of the box is saved by goalkeeper in the centre of the goal by Konstantinos Tzolakis - Olympiakos Assist - Martin Ødegaard with a through ball.
New attacking attempt. Ayoub El Kaabi - Olympiakos - shot with the head from the centre of the box is saved by goalkeeper in the centre of the goal by David Raya - Arsenal Assist - Gelson Martins with a head.
Fouled by Myles Lewis-Skelly - Arsenal
Chiquinho - Olympiakos - won a free kick in defence.
Offside - Olympiakos. Ayoub El Kaabi is in offside.
Myles Lewis-Skelly - Arsenal - won a free kick in defence.
Fouled by Ayoub El Kaabi - Olympiakos
Gabriel Martinelli - Arsenal - won a free kick on the right wing.
Fouled by Francisco Ortega - Olympiakos
Myles Lewis-Skelly - Arsenal - won a free kick in attack.
Fouled by Gelson Martins - Olympiakos
Missed chance. Gabriel Martinelli - Arsenal - shot with the head from the centre of the box missed to the left. Assist - Myles Lewis-Skelly with a cross.
The teams are on their way out of the tunnel - and we're about to get underway at Emirates Stadium