We'd better have a VAR referral tonight after all this...

To play to the whistle and that they could be booked if they aggressively ask the referee to seek help from VAR.

Image source, Getty Images

Opponents of VAR suggest it will upset the flow of the game, but it will normally be used during stoppages in play and limited to four types of match-changing incidents:

• Goals
• Penalties
• Straight red cards
• Mistaken identity

Furthermore, it is only to be used where there has been a clear and obvious error made by the referee or his two on-field assistants.

So, for example, if an offside goal is given, the VAR will contact the referee via an audio link and tell him to reverse that decision as soon as possible.

Image source, Getty Images

Crystal Palace have reached the fourth round of the FA Cup in each of the last four seasons, including an FA Cup final appearance in 2016.

Steve Claridge
Ex-Premier League striker on BBC Radio 5 live

Unfortunately for Palace the changes they have made are big changes, they are the ones that make the difference. Benteke and Zaha.

I am not surprised given how many injuries they have, but having said that, Brighton looks like a well balanced team and there is enough in all of these squads where they can put out good sides, and on paper it looks like two evenly matched sides and I am expecting a good game.

Image source, Getty Images

Brighton have progressed to the fourth round of the FA Cup in seven of the last eight campaigns, falling at the third round stage in 2015-16 against Hull City.

Rob Nothman
BBC Sport at Amex Stadium

5-Live Sport is under way for Brighton v Crystal Palace, with Kelly Cates, Jonathan Pearce and Steve Claridge, and you can see the VAR screen in the distance. It looks like a black speed camera ....

Image source, BBC Sport

Luke Price: Huddersfield away in the fourth round. Was hoping for a good cup run. Who knows though.

Uzzy Fiaz: Repeat of the 2015 third round tie when Herrera and Di Maria were on the scoresheet... it's been a long time.

Jon Hayes: Is the FA Cup draw the best part about the FA Cup in recent years?

Kenny from Isle of Wight

Mike H

Steve Claridge
Ex-Premier League striker on BBC Radio 5 live

Once you bring goal line technology in, you have to bring the rest in.

The problem now is where does it end?

I think they've got a happy medium at this stage but it will be interesting to see how it's implemented.

BBC Radio 5 live

Jonathan Pearce and former Brighton and Crystal Palace striker Steve Claridge will bring you full match commentary from the AMEX Stadium tonight.

You can listen by tuning into BBC Radio 5 live or by clicking the link at the top of this page

Image source, Getty Images

Some breaking news from the Championship - Championship club Nottingham Forest have named former Middlesbrough manager Aitor Karanka as their new boss.

Karanka has agreed a two-and-a-half-year deal to replace Mark Warburton, who was sacked on 31 December after nine months in charge.

Coventry's FA Cup-winning manager John Sillett: "This young Coventry side will take some beating, I don't care who they draw in the cup. Can we bring it back? Of course we can!"

Former Coventry goalkeeper Steve Ogrizovic: "We took 45,000 fans to Wembley in the Checkatrade trophy last season despite getting relegated. We are a proud club and we will come back."

If you want to talk dogs, FA Cup ties or VAR - get in touch via the usual channels...

GET HIM A DOG Kathryn! What's the matter with you?

You can see our twitter moment here., external

Spare a thought for poor Kathryn Lichaj in the aftermath of Nottingham Forest's FA Cup heroics against Arsenal.

Her husband Eric became a Forest hero as his two goals helped secure a shock 4-2 victory against the cup holders at the City Ground.

The USA international has been longing for a dog for some time, and they even had a deal - he scores a hat-trick and he gets a dog.

Two goals obviously do not make a hat-trick, but now Forest team-mates and fans have joined in Eric's crusade - leaving Kathryn with something of a conundrum.

Image source, Getty Images

"I've got pictures of dogs being sent to me, a hashtag going #GetEricADog and everyone saying he deserves one," Kathryn told BBC Radio Nottingham.

"We're watching the highlights on Match of the Day, I'm really proud of him watching the goals over again and he's still bringing up pictures of dogs.

"He will go to bed and get pictures of dogs up and work out which is best for a family. It was starting to do my head in, so I said if you get a hat-trick we'll make a deal and you can have a dog.

"I thought, I'm safe here, we're not going to have a dog."

Nottingham Forest didn't get the best reward for knocking out Arsenal - a trip to Hull - but the main news to that game was canine based...

Yeovil host Manchester United, and Newport County host Spurs!

Two proper ties there...

Norwich/Chelsea v Newcastle

Sheffield United v Preston

Hull v Nottingham Forest

Newport County v Tottenham