Phil Neville
Former England & Man Utd defender on BBC Radio 5 live

There's no surprise there. Jose Mourinho has to make sure that on Sunday against Chelsea he has all his big guns full of energy. Sunday is a massive game for him. He's going back to his old club and he knows it's a massive opportunity to put down a real big marker.

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It's a sporting battle with a difference. On one side, 20,000 football fans, with a maths geek up front. On the other, officialdom, strong in defence.

The tussle at its heart? Whether the football on British road signs should be an accurate depiction of the real thing.

Currently, the image on the sign is made entirely of hexagons but a ball like that would be geometrically impossible to make.

Instead, a real football has a mixture of hexagons and pentagons - and maths crusader Matt Parker has started a petition to get that changed.

However, despite 20,000 people signing up to support him, the government has given them the red card.

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Barcelona will qualify from Group D if they beat Olympiakos and Juventus don't lose to Sporting Lisbon. A Barca draw will be enough if Juventus win.

Juve are through if they win and Barca don't lose.

In a similar vein, Paris St-Germain and Bayern Munich can both help to send each other through tonight. PSG will qualify if they beat Anderlecht, and Bayern don't lose to Celtic. A draw would do PSG if Bayern win.

Bayern will progress from Group B if they win and PSG don't lose.

In Group A, Basel are through if they beat CSKA Moscow at home and Manchester United avoid defeat at home to Benfica.

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Ernesto Valverde's Barca side will qualify for the last 16 if they better the result of Sporting Lisbon, who are at home to Juventus.

Valverde managed Olympiakos in two spells between 2008 and 2012.

"It's emotional to come here to Athens, to this stadium, for what it has meant to me and for what is at stake," said Valverde, 53.

"Even though they (Olympiakos fans) will give me a good reception, I'm sure they will be right behind their team."

Olympiakos, who are still without a point in Group D, will see their slim hopes of qualification end if they lose and Juventus avoid defeat away at Sporting Lisbon.

No matter how your Tuesday has gone, it's unlikely you've had a worse day than Great British Bake Off judge Prue Leith.

Prue accidentally revealed the show's winner, hours before the finale was due to air.

An absolute clanger. You literally had one job.

It's almost impossible these days but does anyone out there still manage to avoid results before watching MOTD? How? And how have you been foiled in the past?

How about what's the most surprising way you've found out some news about your team?

The most annoying?

Let us know your stories.

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You can text us on 81111 (UK Only, with your names on please) or tweet us at #bbcfootball.

Ian Dennis
Football commentator on Radio 5 live

It wasn't a thriller a fortnight ago but it was 'job done' by Manchester United. Benfica were a very poor side though.

I know their results have since picked up and Jose Mourinho continues to say they are a better side than the other teams in the group, but they certainly weren't from what we saw the other night.

Mourinho did say yesterday he won't be thinking of the Chelsea game (in the Premier League.) In his mind, he wants to get the win tonight and qualify for the next round.

Manchester United

Manchester United make six changes from the team which beat Spurs. Youngster Scott McTominay starts - full line-up to follow.

File that threat under 'man-management.'

Mbappe starts.

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Striker Kylian Mbappe could be dropped for Paris St-Germain's Champions League group match against Anderlecht.

Mbappe, 18, is on loan at PSG from Monaco and will become the second most expensive player in history when he completes a permanent 180m euros (£160m) move in the summer.

The Frenchman has scored four goals in his first 10 PSG games, but struggled in his last two Ligue 1 matches.

"It is a new experience for him," said PSG coach Unai Emery.

"When you play well, you open all the papers and you listen to all the sports shows and they say that you are the best.

Underrated.

Underrated.

Underrated.

Phil Neville
Former England & Man Utd defender on BBC Radio 5 live

Edin Dzeko has always been underrated. His movement is good, he is big and strong. He took his time to take off at Roma but he is their main man.

The goal he scored in the first game was absolutely sensational. He is a very underrated striker, very underrated.

We haven't had the Manchester United team yet. Stand by.

Here's how we expect the teams to line up tonight. Chelsea's change means a slight tweak as Gary Cahill starts at centre-back - and Cesar Azpilicueta takes Davide Zappacosta's place on the right.

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If you really enjoyed Burnley v Newcastle last night you may want to zone out.

The tally of 156 goals scored so far in the 48 group games, external means the Champions League are on course to beat the record of 292, set in 1999-2000.

Simon Stone
BBC Sport at Old Trafford

Jose Mourinho can't help himself can he?

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"I hope that you enjoy the game more than some of you did against Tottenham."

Ouch

Manchester United striker Romelu Lukaku should be "untouchable" from fans' criticism, says manager Jose Mourinho.

The £75m summer signing from Everton, 24, scored 11 goals in his first 10 games - but none in his last five.

"What he does for the team is fantastic and to play football for a striker is not just about scoring goals," said the Manchester United boss.

"I think Romelu is one of the players who should be untouchable in terms of respect from everyone."

The Belgium forward, sold by Mourinho while he was Chelsea manager, drew his fifth blank in a row against Tottenham on Saturday - but did set up Anthony Martial's winner.

Chelsea

Chelsea make only one change from the side who beat Bournemouth 1-0 on Saturday. Captain Gary Cahill replaces Davide Zappacosta, who drops to the bench. Eden Hazard starts again. N'Golo Kante doesn't return from the hamstring injury which has kept him out for a month.

Roma make three switches from Saturday's 1-0 win over Bologna. Former Manchester City defender Aleksandar Kolarov, star midfielder Radja Nainggolan and Diego Perotti all come in. Edin Dzeko, who scored twice at Stamford Bridge, starts.

Phil Neville
Former England & Man Utd defender on BBC Radio 5 live

Eden Hazard is scoring goals, he is playing with more freedom and I think he is back to his best. He could be the difference tonight for Chelsea.

Indeed, N'Golo Kante is not in the Chelsea squad tonight. Cesc Fabregas makes his 100th Champions League appearance.

George Cummins
BBC Radio 5 live

For Chelsea tonight the equation is simple. Win in Rome and they qualify for the knockout stage of the Champions League.

Just over a month ago, BBC Radio 5 live were in Madrid for Chelsea's 2-1 win over Atletico. It was one of the club's finest performances under Antonio Conte.

Despite winning their past three games, Chelsea have struggled to play with the same intensity that made them champions last season.

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The good news though, is that Eden Hazard is getting back to his best. The bad news is that N'Golo Kante is not fit after a hamstring injury, which he picked up while on international duty.

A point will keep Chelsea in pole position in Group C before they travel to Qarabag in two weeks time, but they will want it wrapped up before Atletico Madrid visit London in December.