Porto have got a goal back - they need two more in the last 20 minutes to go through.

You can follow minute-by-minute updates of that game in a separate page - click here to follow action from the Allianz.

Image source, Reuters

Xavi came on at half-time and has had 34 touches - PSG forward Edinson Cavani has been on all game and had 31.

That's got to be embarrassing.

Zlatan has his first strike in anger of the night, a swerving effort from 25 yards but Marc-Andre ter Stegen makes a fine save.

A couple of big goals have just gone in in League One which affect both ends of the table.

MK Dons have taken the led against Doncaster to once again close the gap on second-placed Preston, still 2-0 up at Notts County, to a point.

And Rochdale have kept their play-off hopes alive and hit Leyton Orient's survival hopes by going ahead at Spotland.

Meanwhile the fans in the north-west of England watching Blackburn v Millwall in the Championship and the League Two meeting of Bury and Southend are still awaiting a goal.

The Brazilian Titus Bramble. We'd all pay good money to see him play wouldn't we?

Andy Murray is in the stands tonight.

Image source, Reuters

OK. Let's leave poor David Luiz alone now. OK?

Alright, here's a couple more.

Josh, Birmingham: David Luiz is an abysmal defender but a great technical footballer. As a defender, he's the Brazilian Titus Bramble

Tom Sheffield: People say Jose is a genius for getting £50mil for Luiz. I highly doubt he was the one doing the negotiations. Stop exaggerating!

And a serious one about football...

Hussein Faridany: People ignore the less obvious positives about this Barca team. No matter what they press incredibly well and are extremely fit

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Again Marco Verratti is lucky not to get booked after sweeping the legs from Neymar from behind. Naughty one.

Wonderful pass from Ivan Rakitic sends Luis Suarez away but his cross from the right is over hit. PSG make a change, the rapid Lucas is on for the final 25 minutes.

Image source, AP

PSG boss Laurent Blanc warned that his side weren't coming to Barcelona on a school trip tonight. If this was a school trip, he'd be hauled up in front of the governors. A horrible evening for all concerned.

We'll go to Hunstanton next year. There's a sealife centre and everything.

(There's nothing going on in the game by the way. A dead rubber. An ex-tie.)

Image source, Reuters

Barca are getting sloppy now, there's no jeopardy in the tie for them and it's leading to complacency. Gerard Pique slices his clearance, PSG pick out a cross from the right and Marco Verratti has all sorts of time and space on the edge of the box. Take a touch, steady yourself and hit it! But he drags it well wide. Poor technique.

David Ivett: PSG's performance isn't reflecting well on Chelsea... How did they go out to this lot with a man advantage?

Joshua Willard: Are Barcelona even running at any point?! #walkinthepark

And, a bit more love for David Luiz...

Joe, London: David Luiz looks like a lost child in Sainsburys. Someone get on the tannoy so his mum can come collect him.

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Marco Verratti collects yellow cards like some do stamps, and you can see why. He can't resist a challenge and is very late on Sergio Busquets. He gets away without another yellow tonight.

Busquets is not injured but he's replaced by Sergi Roberto in midfield.

Image source, Reuters

Lionel Messi goes for the outrageous chip, it's a good effort too but Salvatore Sirigu watches it like a hawk. Barca are 5-1 up and Messi hasn't scored...

Millwall's hopes of survival in the Championship would receive a massive boost if they could score in the second half of their game at Blackburn. It's currently goalless at Ewood Park - and if it stays like that, the Lions would be three points adrift of safety with two matches remaining.

Promotion from League One is still in Preston's hands after they took a 2-0 half-time at relegation-threatened Notts County. They started the night in second place and a point ahead of MK Dons, who are only drawing 0-0 with Doncaster at the break.

Fourth-placed Bury and fifth-placed Southend have not been able to find a goal in the first half of their League Two clash at a packed JD Stadium - where all the fans have been allowed in for free.

Xavi misplaced a pass! I have truly seen it all now. A bad ball and Zlatan Ibrahimovic starts PSG on an attack but it goes nowhere.

The French side have no belief left in the locker. They're out and they know it.

Image source, Reuters

Bak under way in Munich too.

You can follow minute-by-minute updates of that game in a separate page - click here to follow action from the Allianz.

Game on!

Barcelona aren't bringing on the manager - but it's the next best thing. Xavi is coming on at half-time in place of Andres Iniesta.

David Luiz is getting a lot of love tonight.

Andrew: There's only one word that can be used to sum up David Luiz. Liability.

Jenni: How did Chelsea get £50m for David Luiz. The man simply cannot defend.

Ian: Please can someone remind me of the total value of transfer fees commanded by David Luiz? The guy is an absolute liability

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What's your half-time team-talk if you are Laurent Blanc at PSG or Julen Lopetegui at Porto?

Real US Military drama style inspiration needed...

BBC Sport's Simon Stone: "Goalless first-half at the Tameside Stadium - FC United v Stourbridge.

"A draw would almost certainly promote FC United as they would have to lose by 10 goals at Workington on Saturday to end up in the play-offs.

"But with a pretty loud and vocal crowd in attendance, they would prefer to get the job done tonight.

"Craig Lindfield came closest for the hosts with a header that flicked off the bar after 11 minutes.

"Meanwhile, approximately 30 miles away and one league lower, Darlington are drawing at Warrington.

"If that stays the same, Salford City, the team part-owned by the 'Class of 92' - Ryan Giggs, Gary Neville, Paul Scholes, Phil Neville and Nicky Butt - will be promoted."