In the competition tonight, champions Manchester City are away to Young Boys in Group G from 8pm.
The other game in that Group is between RB Leipzig and Red Star Belgrade.
Newcastle United host Borussia Dortmund in Group F at St James' Park from 8, with PSG to play AC Milan in the other Group game.
Also at 8 o'clock, it's Celtic up against Atletico Madrid in Glasgow in Group E - with the other tie in that Group involving Feyenoord and Lazio.
In Group H, Barcelona play Shakhtar Donetsk and Royal Antwerp face FC Porto at 5:45pm.

Kildare Football Team vs Derry
Tottenham Set To Appoint Igor Tudor As Interim Head Coach
Two League Of Ireland Games Postponed Due To Weather Conditions
ROI Begin Their National League Campaign Away To Kosovo On September 24th
Friday Morning Sports Update
Andy Farrell Names Ireland Team For Six Nations Game Against Italy
Thursday Morning Sports Update
Robbie Keane Insists He's Content Where He Is Amid Vacant Manger Job At Tottenham