Celtic's Europa League fate lies entirely in their own hands with the Hoops sitting pretty at the top
Neil Lennon's side can knock Lazio out of the competition with victory at the Stadio Olimpico having stunned them on home soil last time out.
A Cluj victory in Rennes would then leave it as a straight fight between the Scottish and Romanian champions to decide who tops the table.
If Celtic win in Rome than a stalemate in that fixture would also be enough to send them through, but a Rennes victory would mean they'd have to avoid defeat to the Ligue 1 side at Celtic Park on November 28 reach the last 32.
That's easier said than done though - the Hoops have never won a European game in Italy.
Here's everything you need to know about the game.
When and where will the game take place?
The match takes place at Rome's Stadio Olimpico on Thursday November 7 with a 17.55 kick-off time.
What channel is it on?
The match is live on BT Sport 3, with coverage beginning at 17.15 but don't expect much post-match analysis with the clash between Rangers and Porto following immediately.
Is it being streamed online?
Yes, subscribers can watch on the BT Sport app.
Where else can I follow the game?
You can follow it right here on dailyrecord.co.uk of course! We'll be running a live blog well ahead of the TV coverage, bringing you all the key moments as well as post-match reaction and analysis.
A match report and much, much more will also be available on our website following the final whistle.
