Tom: PSG will no doubt have a different playing style without Cavani or Neymar, but Mbappe has scored the most goals out of the front three with 22 this season, and with support from playmakers such as Verratti and Draxler, PSG may just surprise a few people

Duncan: Regardless of the injuries to PSG, still see them causing Man Utd problems and getting the win

Edin Dzeko has scored eight goals in his last five Champions League games at the Olimpico. He has found the net 15 times for Roma in the competition, which is two short of the all-time record for the Italian side, currently held by Francesco Totti (17 goals).

Simon Stone
BBC Sport at Old Trafford

Image source, Getty Images

Ole Gunnar Solskjaer is really up for tonight's game if the opening to his programme notes are any guide.

He says: "These are the nights we live for at this club. It’s a massive Champions League game against a great opponent, under the floodlights in a fantastic stadium with the best fans in the world cheering us on."

After 10 wins from 11 games, Solskjaer has every reason to be upbeat.

Robbie Alexander: Buzzing about tonight, have that feeling that Old Trafford will be rocking and the players will rise to the occasion and benefit from the atmosphere. PSG are obviously dangerous but Liverpool showed they had weaknesses . Time to take advantage of them.

Fabian Pavez: How about the perfect script for Ole... devour PSG home and away and go on to beat Juventus in the Final and lift the big Ears... Looking into the future. In Ole we trust.

Waseem Akhtar: Total annihilation of PSG coming up. Martial and Pogba to cause major problems tonight! Please Follow, RT and like.

As another week of big cup-competition football gets underway, don't miss out on the possibility of glory yourself.

Let Alex Scott explain...

...but there's under a week to sign up for the 2019 FA People's Cup, so find out where to register here.

You don't even have to have a team - you can enter on your own!

Simon Stone
BBC Sport at Old Trafford

They don't like it being called the 'singing section' but there will be one in operation at Old Trafford tonight.

One thousand 'Red Army' Manchester United supporters have been seated together in the north-east quadrant of the stadium, so that should be quite noisy.

Confidence = high in the United fanbase?

Dinosaurthunder: What else does OGS need to do for the job? Get Man United tattooed on his forehead?

Bossman: Ole Gunnar Solskjaer might just turn out to be another Zizou in disguise with the right support and groups, while the burden of expectations on PSG might weigh heavily on them.

Riley: I do think United will win over two legs, I think it will be 3-2 United

Neymar - injured.

Edinson Cavani - injured.

MASSIVE.

Thomas Tuchel: "Would Man Utd miss Pogba or Rashford? Of course. Neymar is one of our best players and one of the best players in Europe. We will miss him a lot. And now Cavani is out."

Over to you Mr. Mbappe...

Image source, Reuters

Video Assistant Referees (VAR) will be introduced into the Champions League from this round. The VAR will be used in order to support the referee when making decisions concerning four match-changing situations:

1. Goals

2. Incidents in the penalty area

3. Red cards

4. Mistaken identity

Sixth in Serie A v top in Portugal...

Image source, Getty Images

No, not Gary Lineker...

Image source, Getty Images

Is Ole Gunnar Solskjaer the man for Manchester United now?

Can PSG challenge without two of their front three?

Fire away with your thoughts on tonight's action...

Image source, Getty Images

When the draw was made for the knockout stage this looked like a very, very tough night for Manchester United indeed.

In mid-December, Jose Mourinho's side were 11 points off a top-four place and had just been thumped at Anfield, with Mourinho 24 hours away from the sack.

PSG were 14 points clear in France...

Image source, Getty Images

Fast forward a couple of months and Manchester United have won 10 out of 11 games under Ole Gunnar Solskjaer, have snuck into fourth and look like a proper, exciting team again.

PSG are still walking away with Ligue 1 - they are 10 points clear now - but they have lost both Neymar and Edinson Cavani to injury and have had the toughest few weeks of their season.

Still favourites?

Simon Stone
BBC Sport at Old Trafford

Image source, Reuters

There has still been no word from Manchester United about the permanent successor to Jose Mourinho.

It feels very much like Ole Gunnar Solskjaer's job to lose though, and, judging by his programme notes, the Norwegian has been involved in planning for the future.

He said: "The players who are at this club are here because they are special. I believe in these players.

"That’s why we’ve given out some new contracts recently and I hope we have some more signed in the near future.

"This is a young squad and they have plenty of development left in them before they peak."

...but Ole Gunnar Solskjaer has a bit of history in the Champions League...

Image source, Rex Features

It's hardly ever mentioned though.

Honestly, it's pretty much forgotten about.

The former United striker has carried on his act of producing miracles from the bench since stepping into the interim breach at Old Trafford. Could he go on to win it once again...?