We're just 10 minutes from kickoff. All the pre-match talk is about whether McTominay can replace Casemiro in Man Utd's midfield, especially with Odegaard on fire for the Gunners.
Arsenal starting XI: Ramsdale, White, Saliba, Gabriel, Zinchenko, Partey, Xhaka, Odegaard, Saka, Martinelli, Nketiah.
Subs: Turner, Tierney, Smith Rowe, Holding, Tomiyasu, Vieira, Lokonga, Marquinhos, Trossard.
Man Utd starting XI: De Gea, Wan-Bissaka, Varane, Martinez, Shaw, McTominay, Eriksen, Fernandes, Antony, Rashford, Weghorst.
Subs: Heaton, Lindelof, Maguire, Malacia, Fred, Pellistri, Elanga, Garnacho, Mainoo.
Man Utd are looking really good under Erik Ten Hag. They've lost one of their last 12 league fixtures, a defeat to Aston Villa. They dropped two points on Monday in a 1-1 draw at Crystal Palace, conceding in injury time.
Arsenal are in sensational form. They have ten wins and two draws in 12 league matches. Only Southampton and Newcastle took points off them. They won 2-0 away at Spurs in the derby last week.
Hello and welcome to live coverage of Arsenal vs Man Utd from the Emirates Stadium. Kickoff in the English Premier League is at 6pm SAST.
A good start by Arsenal, as expected. Martinelli receives down the left and wins a corner off Wan-Bissaka. It comes to nothing though.
KICKOFF! We are underway here as referee Anthony Taylor blows his whistle.
BLOCK! Arsenal are looking brilliant here. Martinelli gets it after flowing football and he pulls it back for Odegaard but the captain surprisingly makes poor contact. United block it away for a corner.
Yet another Arsenal shot, this time from Partey, sent wide on his left foot. It came after an Arsenal corner was well worked. Man Utd are rocking a bit in the early stages here.
Man Utd now do some good work as Weghorst holds it up and McTominay switches it out to in-form Rashford. Saka comes back and defends well, then Saliba clears a cross from Shaw.
Penalty shout! Fernandes makes an excellent run from deep and catches Gabriel napping. The Portuguese midfielder gets to the ball before Ramsdale and collapses to the ground but there is nothing doing there, no penalty.
Man Utd try to build from the back but De Gea kicks it straight out of play. Arsenal move it quickly and Martinelli curls a shot over the bar from Partey's pass.
BLOCK! Odegaard robs Fernandes in the Man Utd half. He plays a reverse pass for Martinelli who bundles past a defender and fires off a shot inside the box which Shaw blocks.
Man Utd try to counter attack after that blocked shot before Gabriel challenges Fernandes and takes a kick on the arm from the midfielder. He isn't at all happy with that challenge and reacts angrily.
Close! Arsenal take a quick throw and Saka curls a cross into the area. Wan-Bissaka puts it behind for a corner, but too close to his own goal for his liking. He would have had his heart in his mouth there.
GOAL, RASHFORD, MAN UTD, 1-0! What a strike by Rashford, his ninth goal in nine matches. He goes past Partey with brilliant skill and fires off a strike from 35 yards which swerves left to right past Ramsdale. Absolute pure class. Arsenal 0-1 Man Utd.
YELLOW, Arsenal: White clatters Rashford from behind with a nasty follow-through. The yellow card is rightly shown.
That goal came again the run of play, with United's first shot to four for the Gunners, who've looked silky in the early stages.
It's all Arsenal here. Saka does well and it leads to Nketiah having a shot deflected away for a corner. Saka then drives the corner low for Martinelli on the edge of the box, but he curls wide.
GOAL, NKETIAH, ARSENAL, 1-1! There's the goal that the Gunners deserve. A corner is worked short, Odegaard sets up Xhaka to cross and Nketiah heads home at the back post with Wan-Bissaka losing his marker. Arsenal 1-1 Man Utd.
The time difference between those goals was six minutes and 18 seconds. It's been a brilliant response by the log leaders.
SAVE! Martinez wins the ball off Odegaard for Man Utd and the visitors counter attack. Antony tees up the arriving McTominay to strike from 20 yards and it draws a good diving save from Ramsdale... corner kick!
Man Utd deliver the corner into the box and after some pinball, Saliba gets stuck in and then the offside flag goes up. Odegaard is hobbling for Arsenal with what seems to be a back problem.
Arsenal are putting good pressure on with switches to Saka, and Odegaard moving wide to overload. The latest attack breaks down after an offside though.
A yellow card now for Mikel Arteta for apparently being too animated in demanding a caution for Man Utd after persistent fouling.
Saka wins a corner for Arsenal despite vehement Shaw claims. Saka delivers the corner himself and it rolls across the area without a teammate turning it home.
White gives the ball away for Arsenal then stands up as Man Utd break and then deliver a cross. That early yellow for the Arsenal right back has affected how aggressive he can be. I suspect we may see Tomiyasu sooner rather than later.
Man Utd are struggling to involve Weghost in the match. An Antony cross doesn't reach him and then a Fernandes dummy sees the Dutchman caught offside.
A stat to sum up the first half: Arsenal have had 19 touches in the Man Utd box. The visitors have had just two in the Gunners 18-yard area.
HALF TIME. Well, that has flown by. Some really good football on display. Rashford's world class strike opened the scoring but Nketiah headed Arsenal level and that's the very least the hosts have deserved for a fine, fine performance. Join us in 15 minutes for the second half. Arsenal 1-1 Man Utd.
+2' Shaw is being really tested here as Saka isolates him. He stands up to the rest and blocks a shot and then gets a half-block on another Saka effort, which loops into the arms of De Gea.
Added time: two minutes.
Foul: White trips Rashford from behind. Remember he has been carded and has to be very careful. United take an absolute age over taking the restart with the referee motion them to hurry up.
SUB, Arsenal: White goes off for Tomiyasu at half-time, as predicted.
KICKOFF! 1-1. We are underway in the second half. One change for Arsenal at the interval.
YELLOW, Man Utd: Antony trips Zinchenko with a late challenge and get a card.
Antony gets away down the Man Utd right but Partey comes screaming across to make a fine challenge. A corner is given but Shaw's delivery is poor for United.
Arsenal are playing some lovely still. Odegaard's searching ball for Martinelli causes Wan-Bissaka problems, then Gabriel tumbles in the box wanting a penalty but he was looking for that!
CLOSE! Odegaard plays a beautiful flicked pass into the path of Xhaka in the box but Martinez comes across bravely to make a goal-saving tackle.
GOAL, ARSENAL, SAKA, 2-1! A long range powerful strike by the winger. He cuts inside and fires off a left-footed shot which flashes into the far bottom corner. Saka, what a special young player. Arsenal 2-1 Man Utd.
SAVE! Rashford is carrying the fight to Arsenal. He cuts inside and wriggles a gap to get a shot away, it deflects and bounces just wide of the far post after a good reaction save by Ramsdale. Then Antony has a shot which Gabriel blocked, it lacked power though.
Shaw gets forward for United and it leads to a corner off Tomiyasu.
GOAL, MAN UTD, MARTINEZ, 2-2! Eriksen delivers the corner, Ramsdale gets a weak punch to it and Martinez loops a header over Gabriel on the line. What a match we're enjoying tonight. Arsenal 2-2 Man Utd.
Six minutes and eight seconds between Saka's wonder strike and the headed equaliser by Martinez. Very similar to the first half response from the team falling behind.
Odegaard fluffs a shot for Arsenal and Man Utd counter. Shaw plays a ball down the line for Rashford, who has a 1v1 against Tomiyasu. The defender wins that one, good defending by the Japan international.
Arsenal work it down the right again with Saka. He passes inside to Nketiah but Varane is tight and defends well, winning a goalkick.
Some glorious football by Arsenal. Zinchenko is playing in midfield when they have the ball and is running the show. He finds Xhaka who declines to shoot and sets up Odegaard to have shot blocked by Eriksen.
Arteta is furious on the sideline that Xhaka got the ball in the box but didn't pull the trigger. Such good, creative play by Zinchenko.
POST! Saka is at it again. He drives iniside Shaw and Eriksen and curls an effort for the far corner, but this one strikes the base of the post and goes wide... off a tiny deflection off Shaw.
SUB, Man Utd: Fred comes on for the ineffective Antony.
Arsenal have United penned into then own defensive third. Weghorst is playing about ten yards from the penalty box circle now. Crosses from Martinelli, Tomiyasu and then Zinchenko are well defended by the low block.
Martinez looks long for Rashford but the forward is offside. It can't be long until we see Elanga or Garnacho and Rashford moving up front.
Saka now goes down the line and crosses to Martinelli at the back post. The latter works a yard and strikes a good shot which Martinez blocks well with his bandaged head.
Absolutely relentless Gunners pressure. Xhaka has a shot blocked, De makes a weak punch, we have Wan-Bissaka crunching into high risk sliding tackles. Man Utd are playing like it's 95' on the clock, not 81'. They surely can't hold on for the next 10-15 minutes at this rate?
SUB, Arsenal: Trossard comes on to replace Martinelli to make his Gunners debut.
YELLOW, Man Utd: Shaw clatters Saka and gets booked.
CHANCE! A freekick breaks in the Man Utd box. Nketiah strikes a shot on the turn, a fine effort, but De Gea gets down well to save.
Block! Eriksen finds a yard and has a shot deflected just wide of the post. That's just United's sixth shot to 24 for the hosts. Erik Ten Hag's team have long settled for a draw and would be delighted to leave North London with one.
FULL TIME. Arsenal have done it! What a win and what a huge performance from the Gunners. They dominated almost all of that match and despite United coming back to 2-2, Arteta's side kept going and Nketiah's brace was totally deserved. Thanks for joining us for this brilliant Premier League viewing. Arsenal 3-2 Man Utd.
SUB, Arsenal: Holding comes on for Odegaard to try to hold on this narrow lead.
2' SUB, Man Utd: Garnacho comes on for Varane. A Hail Mary from Erik Ten Hag who had only made a defensive sub before that.
GOAL, ARSENAL, NKETIAH, 3-2! Late, late drama. A long VAR deliberation and the finish is beyond the last defender but it was Fred who deflected the ball backwards. That counts and it's a brace for Nketiah, a huge, huge goal. Arsenal have deserved nothing less. Arsenal 3-2 Man Utd.