Away we go!

Up and running!

Image source, Reuters

John Hartson
Ex-Wales striker on BBC Radio 5 live

"It is a wonderful occasion, but all the celebrations from Anfield will be put aside. What an opportunity Plymouth have tonight."

Bill Shankly was in charge the last time Liverpool played in Plymouth. That's how long it has been. All set? Wonderful atmosphere out there. 

BBC Radio 5 live

Plymouth manager Derek Adams has been talking to BBC Radio 5 live. He said: "It's going to be a fantastic occasion for us and we did really well in the first game to take them to Home Park.

"We played well, defended well and we will have to again today. Liverpool have international class players but at times in the game we will have to go at them.

"We have had a league match in between but we performed well against Stevenage. It is a very big game for the football club, it is like a soap opera here, which we have not seen for a while.

"Tonight our supporters will be very vocal, it will be a tremendous atmosphere and we are all looking forward to it."

Here's who awaits in the fourth round.

Newcastle OR Birmingham will travel to face League One side Oxford.

Plymouth OR Liverpool will host Wolves in an early kick-off, and Southampton OR Norwich host Arsenal in another televised game. 

Plymouth: McCormick, Threlkeld, Songo'o, Bradley, Purrington, Fox, Jervis, Donaldson, Carey, Slew, Garita. Subs: Sawyer, Bulvitis, Rooney, Dorel, Tanner, Fletcher, Rose.

Liverpool: Karius, Alexander-Arnold, Gomez, Lucas, Moreno, Coutinho, Stewart, Ejaria, Sturridge, Origi, Woodburn. Subs: Klavan, Mignolet, Ojo, Randall, Williams, Wilson, Paulinho.

Referee: Graham Scott (Oxfordshire)

Aaron: Norwich to shock the world by winning a game.

Home Park rocking now. Almost time for Liverpool to enter the green cauldron. 

Image source, Reuters

Ever dreamed of lifting a trophy on the pitch at Wembley? Well, here's your chance.

BBC Get Inspired has again teamed up with the Football Association to launch the 2017 FA People's Cup, a free five-a-side knockout competition that gives the people of England the chance to play in their version of the FA Cup.Watch as Radio 1Xtra DJ Nick Bright shows his (almost) silky ball skills, while explaining how you can get involved - and for all the information you need, read our Get Inspired guide.

Image source, Getty Images

• This will be Plymouth's 11th FA Cup replay against a top-flight side, while they are yet to win any of them (D2 L8).
• Liverpool have not lost any of their last 19 FA Cup games against teams from the fourth tier or lower (W15 D4).
• Plymouth faced 28 shots at Anfield, while taking just four of their own.
• The Reds have progressed from three of their last four FA Cup third round replays, losing only against Reading in January 2010 (1-2).

BBC Radio 5 live sports extra

You have a choice for your live commentary needs tonight.

Plymouth Argyle v Liverpool is on BBC Radio 5 live and Southampton v Norwich City is on BBC Radio 5 live sports extra.

Ali Bruce-Ball and Steve Claridge will guide you through all the action from St Mary's.

Image source, Getty Images

It doesn't look like a bumper crowd in Southampton. Both sides are in bad form...

This clip relates to the first game at Anfield - but I liked it so it's in. Here's what happened when BBC Spotlight joined Plymouth Argyle forward Paul-Arnold Garita as he hid the last few remaining tickets for the FA Cup third-round tie at Anfield...

Image source, Anthony Grice

A man who was watching Plymouth Argyle play Liverpool at Anfield when he found out his son had died is to be reunited with two men who comforted him.

Argyle fan Kevin May was at the clubs' FA Cup tie on 8 January when he received a text with the news.

His son Daniel, 25, was quadriplegic, blind and had cerebral palsy following an operation he had as a baby.

Liverpool have brought the unnamed men to Home Park for tonight's replay, along with a special banner.

Bearing the slogan "RIP Daniel May You'll Never Walk Alone", it will be unfurled at the cup tie.

Derby County's FA Cup fourth-round home match against Leicester City will be shown live on BBC One, as will the ties between Millwall and Watford and Manchester United and Wigan Athletic.

Premier League champions Leicester will visit Championship side Derby on Friday, 27 January at 19:55 GMT.

League One Millwall host Premier League Watford two days later at 12:00.

That game will be followed at 16:00 by FA Cup holders Manchester United against Championship strugglers Wigan.

The Old Trafford tie was confirmed after Crystal Palace's third-round replay victory over Bolton on 17 January - had Bolton progressed, their match against Manchester City would have been televised.

Jurgen Klopp has actually only made two changes from that first meeting - but the two who come in are Daniel Sturridge and Philippe Coutinho. 

Nikul11: Why didn't Klopp just play a strong team in the first game at Anfield then?

Liverpool have chosen not to include defender Joel Matip tonight as the row over his eligibility continues. It's all a bit confusing, to say the least.

The Reds failed to get clearance from Fifa on whether he could play for his club during the African Cup of Nations.

Matip, 25, 'refused to play' for Cameroon after being named in their preliminary squad.

Image source, Reuters

Liverpool boss Jurgen Klopp hinted he would select Matip regardless but chose not to after taking legal advice.

Klopp says he has been told that world governing body Fifa will decide by Friday whether an investigation into Matip's situation is necessary.