That's a wrap for another day of chaos and thrills in the FA Cup. Thanks once more for all of your company this weekend, we'll see you all tomorrow from Spotland.

Brighton manager Chris Hughton, speaking to BBC Sport: "We gave ourselves a mountain to climb and then all you can ask for is a reaction. You can't afford to start like that against the quality Arsenal have but we showed great spirit and a decision went against us that on another day could have got us the result we wanted."

On penalty appeals after the ball hit Calum Chambers' hand in the box: "My first impression was that it was very close, and generally that doesn't go your way but the arm was outstretched and on a lot of occasions recently referees have given penalties.

"This is a very ambitious club, at the moment we are in a position in the league where we don't want to be and we have a lot of work to do to. This division is full of clubs that have been Premier League clubs and then found it difficult. Our priority at the moment is to get that stability that we need."

Arsenal boss Arsene Wenger, speaking to BBC Sport: "It was hard work. A typical cup tie where the other team never gives up. We had to fight until the end but overall we were always leading and missed a few chances as well.

"I believe that is where we won the game [at the start]. The results from yesterday maybe got us on our toes and we got off to a quick pace, and I think that surprised Brighton.

"The players who were injured have worked very hard to come back and I think they did well. It is too early to say if we can win the FA Cup, there is such a long way to go."

On the imminent arrival of Gabriel Paulista from Valencia: "He is a defender, can play on the flanks as well, tall, pacy and strong in the challenges. He has a good chance to adapt to English football. I see in him good potential and he can be a good addition to the squad. It could be done before the draw tomorrow."

Arsenal forward Theo Walcott, speaking to BBC Sport: "As defending champions it is our cup at the moment. All those teams going out means it is a massive opportunity.

"We believe with the team we have and the players coming back from fitness we can beat anyone."

Image source, AP

Arsenal manager Arsene Wenger, speaking to beIN Sport: "We started very strongly and played at a good pace with quick combinations and won the ball back quickly. Overall that helped us to win the game. We were still in control at 3-1, but at 3-2 of course then they had more belief. It shows you how difficult it is psychologically in the cups. You think you have done enough to win but no, because the other team does not give up, which is what happened today.

"We had many players who had came back and maybe we dropped a bit physically. They gave it a go like a typical Championship team can do, that is why so many Premier League teams were surprised yesterday. We had to fight until the end as well.

"[The results yesterday were] a huge surprise. You check twice to see if it is true or not because you don't believe it but that is the cup and why people love football, it is only in our sport that lower division teams can beat those of the higher divisions."

Image source, AP

Arsenal manager Arsene Wenger says the deal to sign Villarreal defender Gabriel Paulista is close and should go through early next week.

Full reaction to come.

Arsenal forward Theo Walcott, speaking to Bein Sport: "That is what the FA Cup is about. We did well in patches, it was a typical FA Cup tie - we have a go, they have a go basically.

"We are getting players back to fitness and it is a competition for places now. It is nice to go through because it was very tough today.

"It has been a while since I last scored. It has been a whole year, people will expect me to score every game now but it is not going to happen overnight. It is about building up fitness."

Everton striker Samuel Eto'o's transfer to Sampdoria has moved a step closer after he completed a medical with the Italian club.

Eto'o has had spells at Real Madrid, Mallorca, Barcelona, Inter Milan, Anzhi Makhachkala, Chelsea and Everton

The 33-year-old posted a picture on Twitter and added: "Successful medical. Ready for a new challenge!!!"

Check out all of January's transfers here.

So 10 Premier League sides, six from the Championship, four in League One and Cambridge United of League Two are in the hat for round five. A fine spread.

Who are your favourites at this stage? The final tie of round four comes tomorrow night when Rochdale host Stoke.

Peter Collins: About time one of the supposed 'big' teams made it into the fifth round! Very poor show from the established elite.

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FA Cup draw numbers part two

9. Reading

10. Liverpool or Bolton

11. Leicester City

12. Arsenal

13. Rochdale or Stoke City

14. Sunderland or Fulham

15. West Ham

16. Middlesbrough

FA Cup draw numbers part one

1. Crystal Palace

2. Cambridge United or Manchester United

3. Blackburn Rovers

4. Bradford City

5. Derby County

6. Preston North End or Sheffield United

7. West Bromwich Albion

8. Aston Villa

League One side Bradford will find out their reward for knocking Chelsea out of the FA Cup when the draw for the fifth round is made on Monday.

Middlesbrough are also in the hat after the Championship side beat Premier League champions Manchester City.

League Two's Cambridge United held Manchester United 0-0 and are the lowest ranked of the 16 teams left.

The draw will be made on the The One Show, which starts at 19:00 GMT on BBC One, and Gary Lineker will be a guest.

Former Tottenham manager David Pleat
BBC Radio 5 live at Amex Stadium

"Arsenal dominated the first period with their midfield buzzing all over Brighton and Theo Walcott also started brilliantly. But after one or two little changes from Brighton at half-time and a few words from their manager, they turned in a spirited comeback and Arsene Wenger's heart will certainly have been beating faster than it was after 25 minutes."

Vince, London: Arsenal getting two comfortable away wins back-to-back? Get real. We Gooners need a good dose of panic in the last few minutes, it's only natural.

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Missed anything this weekend?

Check out our FA Cup video page for all of the goals and reaction.

As David Pleat rightly says, the Amex crowd, a record crowd, are giving the players a huge ovation. The first-half was tepid from the hosts but their fans will leave happy after that fine second-half showing

Former Tottenham manager David Pleat
BBC Radio 5 live at Amex Stadium

Image source, Getty Images

"Chris Hughton will be really pleased with the way his Brighton team pulled themselves back together in the second half after going 2-0 down so early on. The home supporters will not be disappointed with the effort their team has shown. They played with great spirit and have given a really good team a tough time."

All over! A great second half from Brighton, they pushed Arsenal all the way but it is the Gunners who are into round five.

Chance! Tomas Rosicky - excellent again - picks out Aaron Ramsey at the far post but he fluffs his volley.