Unai Emery's side face Young Boys in Switzerland from 5.45pm
Aston Villa are back in Europe's top competition tonight after an absence of 41 years.
Unai Emery's side face Young Boys in Switzerland from 5.45pm in their opening fixture in this season's Champions League.
At the same time, Juventus are at home to PSV.
There's an 8pm start at the San Siro, where AC Milan face Liverpool.
In tonight's other games, holders Real Madrid take on Stuttgart, Bayern face Dinamo Zagreb and Sporting meet Lille.

Munster Make Ten Changes To Their Team For Saturday's Game Against Exeter
Manchester United Aim To Clear €1.4 Million A Week From Wage Bill For Future Signings
Suncroft's Cian Prendergast Returns To Captain Connacht In Tomorrow's Game Against Sharks
Thursday Morning Sports Update
Kildare U20 Football Team & Panel vs Offaly
Wednesday Morning Sport Update
New Report Shows Growing Pressure On Volunteers At GAA Club
RG Snyman's Season Ends Due To Injury