We have had six of the eight game weeks in the Champions League. At the end of the league phase, the top eight progress straight into the last 16, while the sides that come between ninth and 24th will play in the two-legged play-offs to join them.

Any side that comes 25th or lower is eliminated and their European campaign is over.

Liverpool will guarantee a top-eight spot tonight if they win or draw with Lille, while even a loss may be enough if other results go their way.

Aston Villa will take a big step towards the last 16 if they can win at Monaco.

This is what we have coming up today.

Wilfried Singo and Dennis Zakaria both start for Monaco despite being fitness doubts for the match.

Former Arsenal player Folarin Balogun misses out with a shoulder injury.

Monaco XI: Majecki; Vanderson, Singo, Kehrer, Mawissa, Zakaria, Camara, Akliouche, Minamino, Seghir; Embolo

Subs: Kohn, Lienard, Teze, Golovin, Henrique, Ouattara, Salisu, Diatta, Diop, Michal, Bouabre, Magassa

There's three changes for Aston Villa as Emi Buendia makes his first Champions League start. Lucas Digne and Leon Bailey also come in.

Amadou Onana misses out after picking up a knock against Arsenal.

Aston Villa XI: Martínez; Cash, Konsa, Mings, Digne; Kamara, Buendia; Bailey, Tielemans, Rogers; Watkins.

Subs: Gauci, Olsen, Duran, Nedeljkovic, Maatsen, Bogarde, Ramsey, Swinkels, Young

Hello and welcome along to BBC Sport's coverage of tonight's Champions League matches.

Nine games across the continent to look forward to, and live radio commentary of two of them in this very page.

Monaco v Aston Villa starts at 17:45 GMT and will be on BBC Radio 5 Live with our commentary team of Alistair Bruce-Ball and Pat Nevin, before we head to Anfield for Liverpool v Lille at 20:00 GMT with commentary from Ian Dennis and Stephen Warnock.

The Champions League is back.

All five British sides are currently on track to advance into the next phase, while Liverpool, Arsenal and Aston Villa could all skip a round and jump straight into the last 16.

Villa have already beaten Bayern Munich in this tournament and Liverpool hold a victory over reigning champions Real Madrid.

The Reds could secure their last-16 spot tonight and Villa will be hoping to maintain their excellent campaign.

Image source, Getty Images

Image source, Getty Images