The Gunners emerged from Thursday's trip to Athens with a huge 1-0 win thanks to Alexandre Lacazette's late strike and must now feel confident of reaching the last 16 of the competition.
Olympiacos though won on the previous visit to the Emirates with a 3-2 victory in the Champions League group stages four seasons ago. A repeat of that result will see Mikel Arteta's men crashing out on away goals.
Read on for all the information you need about how to watch Arsenal v Olympiacos - or simply jump to a specific section from the list below:
• When is Arsenal v Olympiacos? >
• How to get a BT Sport subscription >
• How to watch on a laptop >
• How to watch on a phone or tablet >
• How to watch on TV >
• What if I can't watch live? >
• What other live football does BT Sport show? >
• More on Arsenal v Olympiacos? >
When is Arsenal v Olympiacos?
Arsenal v Olympiacos will be shown exclusively live from 7.30pm on Thursday 27 February on BT Sport 2 HD and BT Sport Ultimate on TV and across our digital platforms.
How to get a BT Sport subscription
Choose your preferred or most relevant option below and we'll get you set up with BT Sport in just 15 minutes.
How to live stream Arsenal v Olympiacos on a laptop
BT Sport customers can bookmark this page, return at the start of our live coverage and then open this Arsenal v Olympiacos live stream.
The stream will also be accessible through the BTSport.com homepage.
Anyone tuning in on their laptop can benefit from watching on the revolutionary enhanced video player.
This means a fully immersive viewing experience, featuring an interactive timeline, multi-camera functionality and goal alerts from other live games.
How to live stream Arsenal v Olympiacos on a phone or tablet
BT Sport customers wanting to watch on the go can open the award-winning BT Sport app at 8pm on Thursday night and follow the link at the top of the homepage.
Just as on laptop, BT Sport app viewers will be available to enjoy the game on our enhanced video player.
How to watch Arsenal v Olympiacos on TV
*BT Sport customers can download the BT Sport app on PS4, Xbox, Apple TV and Samsung Smart TVs (2015 models onwards). To watch the action, follow the link at the top of the homepage ahead of kick-off.
What if I can't watch Arsenal v Olympiacos live?
No problem. The enhanced video player will continue to be available online after the live coverage has finished, meaning customers can watch all the action 'as live' at their leisure or simply use the timeline to catch up with all the key moments.
An exclusive key highlights package of the clash will be made available to all shortly after the game on both BTSport.com and the BT Sport app. We'll also publish in-game clips throughout the 90 minutes.
Alternatively, subscribers can tune in to our exclusive live Europa League highlights show from 10.30pm on BT Sport 2 HD or online as we bring you the best bits of all the night's action.
There will also be several opportunities to watch extended highlights of the game on TV. For more information on the latest listings, check out our TV Guide.
Meanwhile, more extended highlights and full event replays can be found on our TV Catch Up page.
What other live football does BT Sport show?
BT Sport shows 52 live Premier League games per season and is the exclusive home of the Champions League and Europa League, showing every game live.
There's even more for domestic football fans, too, as we show live FA Cup, National League, Scottish Premiership and Betfred Cup action all season long.
BT Sport also offers exclusive coverage of the Bundesliga and Ligue 1, plus a host of fixtures from the Women's Super League, UEFA Youth League, England Under-21 internationals, Australian A-League and much more.
For full details of BT Sport's upcoming live football schedule, check out our Live on BT Sport page.