BBC Radio 5 live sports extra

Your commentary team at Ewood Park tonight. Former Newcastle and England winger Chris Waddle is alongside Ian Dennis. You can listen to the game on 5 live sports extra and here on the BBC Sport website and app.

The players are out at Ewood Park and at Kenilworth Road.

The two 19:45 kick-offs will begin in the next few minutes.

All the teams playing tonight are hoping ultimately to get to the FA Cup final in May - and YOU can too!

The FA People's Cup gives you the chance to play at St George's Park and appear on the Wembley turf during the FA Cup final in May.

Here's Alex Scott to explain...

So what are you waiting for? Find out more about the competition and how to sign up here.

Image source, Rex Features

Blackburn manager Tony Mowbray speaking to BT Sport:

"We got a bit of illness we had a player leave our hotel on Saturday morning to get away from the group. We have a few sat on the bench who aren’t feeling great - Bradley [Dack] for example would probably be in our first 11.

"The big issue is in centre defence, [Charlie] Mulgrew, [Jack] Rodwell, [Paul] and Downing are all out and we’ve got a few academy kids on the bench but we’ll give our best shot tonight.

"Particularly at home we have great belief. It’s just a good challenge for us tonight, a good test against Premier League opposition who have made changes but still have players that can hurt you. Let’s go and play on the front foot and attack and see how we go on."

All three of tonight's matches see teams from different divisions meet.

Luton and Sheffield Wednesday are the closest in terms of league position.

Wednesday are 16th in Championship while Luton are second in League One.

16 places separate Premier League Newcastle and Championship Blackburn.

There are 27 places between Championship side Stoke and League One side Shrewsbury.

Saikat Sanyal: Even with all these changes, I'm expecting NUFC to get the job done against Blackburn tonight.

Blackburn boss Tony Mowbray says illness has hit his squad and has ruled out a number of players.

Image source, Getty Images

Newcastle manager Rafael Benitez, speaking to BT Sport: "You know our list of injuries. We have to manage with the squad we have. I am confident we can go through."

It's the battle of the interim managers tonight at Kenilworth Road.

Mick Harford leads Luton again, having taken over when Nathan Jones left for Stoke, while Steve Agnew remains in caretaker charge of Sheffield Wednesday as they wait for Steve Bruce to take over next month.

This one finished 0-0 when the sides met at the start of the month.

Image source, Getty Images

It is one year to the day that Stoke appointed Paul Lambert on a two-and-a-half-year contract.

Both he and Gary Rowett have been sacked since then.

Image source, Getty Images

Image source, Getty Images

Shrewsbury are looking to end a six-game winless run tonight.

They have not won since beating Coventry on December 22.

Manager Sam Ricketts is expecting a tough game against their opponents from the league above tonight, despite the fact they were close to victory in the original fixture.

"They were a Premier League side last year and have Premier League players," Ricketts said.

"We will be ready. We will have our game plan and we will give it our best shot."

Tonight is Nathan Jones' second game in charge of Stoke.

He lost his first game on Saturday against Brentford in the Championship.

Peter Crouch scored a second-half equaliser for the Potters to earn tonight's replay against Shrewsbury and avoid the embarrassing exit to the League One side.

When you think of Blackburn and Newcastle you can't help but think of this man...

Christopher Mather: Nice to see Brereton starting. Hoping he can find his shooting boots now.

Christopher is happy to see 19-year-old Ben Brereton starting tonight. Newcastle have some youngsters in their line-up too.

Image source, Getty Images

Rafa was criticised by some Newcastle fans for his team selection in the FA Cup, after he rested a number of first-team players.

Ahead tonight's fixture he defended that decision and said will struggle to "have a go" in this season's Cup because of their position in the Premier League.

The Magpies dropped into the Premier League relegation zone last weekend.

"Who has a chance, a realistic chance? Teams in the middle of the table because they can have a go because they are safe," Benitez said.

"The other teams, you have to manage it really carefully."

Fellow Premier League strugglers Huddersfield, Cardiff and Fulham went out in the FA Cup in the third round to lower-league opposition, while Southampton were taken to a replay by Derby.

"Why you see these teams and they were out? Because the Premier League is massive," Benitez said.

"You have £130m guaranteed if you are there. So everyone is trying to manage the situation. You have to be realistic."

Blackburn were heading through in the original fixture against Newcastle 10 days afo before an 84th minute equaliser from the penalty spot for the Magpies.

Bradley Dack had given the Championship side the lead at St James' Park in 56th minute.

Newcastle made eight changes for that game and has done the same again tonight.

Want to get in touch tonight?

You can do so by tweeting #bbcfacup or texting us on 81111.

What do you make of the team news?

Stoke manager Nathan Jones makes eight changes to the side that lost 3-1 at Brentford in the Championship on Saturday.

Ashley Williams, Tom Ince and Sam Clucas all retain their places while veteran forward Peter Crouch and midfielder Charlie Adam also both start.

Stoke XI: Federici, Bauer, Martins Indi, Williams, Tymon, Etebo, Adam, Clucas, Ince, Crouch, Campbell

Subs: Haugaard, Edwards, Woods, Souttar, Afobe, McClean, Berahino

The Shrewsbury boss Sam Ricketts may be without Ollie Norburn who is suspended and Dave Edwards who isn’t eligible, but he has gone with a strong team, naming 10 of the side that lost against Charlton at the weekend.

Town also include 16-year-old Under-18 goalkeeper Sam Agius on the bench.

Shrewsbury: Arnold, Haynes, Sadler, Bolton, Waterfall, Docherty, Laurent, Gilliead, Grant Okenabirhie, Holloway

Subs: Emmanuel, Beckles, Angol, Eisa, Sears, Agius, Rowland

Image source, Getty Images

In case you missed it...

Tottenham striker Harry Kane will be out until March after injuring ankle ligaments in Sunday's 1-0 Premier League defeat by Manchester United.

Spurs say the England captain, 25, will return to training in early March.

Kane, Tottenham's top scorer this season with 20 goals, is likely to miss both legs of the Champions League last-16 tie with Borussia Dortmund.

He will also be unavailable for the second leg of the Carabao Cup semi-final against Chelsea on 24 January and the final should Spurs get there on 24 February.

BBC Radio 5 live sports extra

You can listen to coverage of tonight's FA Cup games on BBC Radio 5 live sports extra.

We have commentary of Blackburn v Newcastle from Ewood Park plus updates from Luton and Stoke.

You can listen by clicking play at the top of this page.