We've had a minute's applause for the NHS, carers and key workers and to pay tribute to all those who have sadly died in the recent pandemic.

There follows all players dropping to one knee to support the Black Lives Matter movement and we're ready to start

As Arteta says, it is another chance for Brazilian centre-half David Luiz, who had a shocker against Manchester City on the day football returned.

He came on a first-half sub, was at fault for goal one then conceded the penalty and was sent off for the second goal as City won 3-0.

Many thought that would be the end for Luiz in English football, but a few days later Arsenal announced he had signed a new one-year contract. What has he got in store for us today.

Arsenal

Arsenal manager Mikel Arteta on BT Sport: "It's always great to play in an FA Cup tie.

"It will be a tough day but we’ll do it for the fans."

On David Luiz: "David [Luiz] has been training really well and he has his opportunity again."

On Arsenal's set-up for today's game: "We have a few different ways of playing and we have to put everybody in the right position."

Obviously Bramall Lane has no fans in attendance. Arsenal are first out on to the field and when they're in position the hosts join them.

Sheffield United

Sheffield United manager Chris Wilder on BT Sport: "Just the next game is a good distraction for us.

"We need to recapture the performances from before lockdown. We've got big players back today and we fancy our chances.

"We just have to concentrate on ourselves. We're pretty much to full strength. We've had a couple of days off, had a good training session yesterday and were ready."

So a big game for both sides at Bramall Lane today. The FA Cup is Arsenal's big hope of salvaging something from a rotten season that sees them down in ninth in the Premier League, one place below the Blades.

But it is an important day for Chris Wilder's side too as their season, which has promised so much and potential European qualification for the first time in their history, threatens to have an anti-climatic ending.

As Sheffield United prepare to face Arsenal in the FA Cup quarter-finals, BBC Sport looks back at a controversial moment involving the two clubs.

It was a fifth-round tie in 1999 between the two sides at Highbury. A player went down injured and Sheffield United kicked the ball out. Ray Parlour threw it back as you would expect, but then things got strange.

Nwankwo Kanu sprinted after it, he crossed and Marc Overmars put the ball into the net as Blades players protested and boss Steve Bruce threatened to take his players of the pitch.

Arsenal won it 2-1, Gunners boss Arsene Wenger offered for the match to be replayed, which it was with Arsenal again winning 2-1 with Overmars again on the scoresheet.

Watch the controversy below...

Some great figures to share with you as the five-minute peak number of people watching yesterday’s FA Cup quarter-final between Norwich and Manchester United on BBC One was 6.4 million.

Thanks to everyone who watched it with us.

Image source, .

Sheffield United make three changes from their humbling by Manchester United.

Dean Henderson, George Baldock and Oli McBurnie return to the line-up.

Sheff Utd: Henderson, Basham, Egan, Robinson, Baldock,Lundstram, Norwood, Fleck, Stevens, McGoldrick, McBurnie

Subs: Zivkovic, Luke Freeman, Sharp, Jagielka, Kieron Freeman,Mousset, Osborn, Moore, Berge

Image source, .

Five changes for Arsenal. David Luiz returns to the defence after serving a suspension and Alexandre Lacazette starts, with Pierre-Emerick Aubameyang on the bench.

Ainsley Maitland-Niles, Sead Kolasinac and Joe Willock also get a call-up.

Arsenal: Martinez, Luiz, Mustafi, Tierney, Maitland-Niles,Willock, Xhaka, Kolasinac, Pepe, Lacazette, Saka

Subs: Bellerin, Papastathopoulos, Ceballos, Aubameyang, Holding,Nelson, Nketiah, Macey, Smith

Everyone likes to see a truly special goal.

So watch as MOTDx's Reece Parkinson, Liam Loftus, Josh Denzel and YouTuber Dean 'Rants' Simon react to Norwich midfielder Todd Cantwell's stunning strike in the Canaries' FA Cup quarter-final defeat by Manchester United.

MOTDx Watchalong returns today at 18:15 BST for Newcastle v Manchester City on the BBC Sport website and BBC iPlayer.

Watch highlights as Harry Maguire scores an extra-time winner to give Manchester United a 2-1 victory over 10-man Norwich City to reach the FA Cup semi-finals.

Gbadero Toluwalope: I can't help but remember 2017 when an out of form Arsenal scattered the odds and triumphed a last four comprising City, Chelsea, Spurs and the Gunners. I just can't help but think something like that will happen again this season. I think the Gunners will win it.

David Huggan: Tuning in from Sydney, Australia. I predict Man City vs Chelsea final. That match-up has never happened in the FA Cup Final before.

The Championship action has already started today, with play-off chasing Bristol City quickly going a goal down at home against Sheffield Wednesday, who lead through Connor Wickham's header.

Follow coverage of that match, as well as Nottingham Forest v Huddersfield from 14:15 BST, in the link below.

As always we want your say on everything that's going on.

Aubameyang on the bench for Arsenal seems a big gamble by Mikel Arteta.

Tweet us using the hashtag #bbcfootball and your messages will appear in this page throughout the day.

Also, tell us who is going to win the FA Cup this year and why?

Three changes for Sheffield United including Dean Henderson back in goal and John Egan back in defence after a suspension.

Five changes for Arsenal, with Pierre-Emerick Aubameyang only on the bench.

Full team news to come shortly.

Hello and welcome along to BBC Sport's coverage of today's FA Cup matches.

This is what we have coming up for you today.

FA Cup quarter-finals

• Sheffield United v Arsenal (13:00 BST)
• Leicester City v Chelsea (16:00, live commentary on BBC Radio 5 Live)
• Newcastle United v Manchester City (18:30, watch live on BBC One with live commentary on BBC Radio 5 Live)

Premier League

• Watford v Southampton (16:30, this will be featured in a separate live page with live commentary on BBC Radio 5 Live Sports Extra).

Manchester United left it late, very late, as Harry Maguire's winner deep into extra-time saw off 10-man Norwich City as United became the first team to move into the FA Cup semi-finals.

Image source, Getty Images

By the end of the day we will know which three teams will be joining them in the final four.