Joe Hart
Premier League winning goalkeeper on BBC 5 Live's Monday Night Club

The referee wasn't even close enough to hear what Gueye was saying but he was in Keane's face, who is considerably bigger than him and shoved him off with one arm.

When he came over to continue the argument, the referee just casually walked over and sent him off. Jordan Pickford did very well in the situation.

If that's all that happened though, it isn't a red card. Something must have been brewing between the two of them.

Do you agree with Graham and Barry that the incident was overblown, or with Simon Stone that hitting a team mate is simply unacceptable?

You can have your say via our poll at the top of this page.

Everton

Everton goalscorer Kiernan Dewsbury-Hall to Sky Sports after the match: "It was a rollercoaster game. I will sleep well, put it that way. I'm so genuinely happy for the lads considering how hard they all worked. It was a fantastic performance where we just gritted away, got a goal and showed that spirit. I'm so thankful we got all three points."

On what happened between his team-mates Michael Keane and Idrissa Gueye: "It was just a moment of madness. It was obviously avoidable. All I can say is Idrissa apologised to us all at half-time and said his piece. That's all he can do and we move on from it."

On his goal: "I found myself in a little pocket, Jimmy [James Garner] found me and I thought to myself that I was going to swing it on my right. I can't say I've done that many times on my right foot. I didn't even know I had that in my locker, but I'll take it."

Image source, Getty Images

Everton

Everton midfielder Idrissa Gueye's statement on social media last night: "I want to apologise first to my team-mate Michael Keane. I take full responsibility for my reaction.

"I also apologise to my team-mates, the staff, the fans and the club.

"What happened does not reflect who I am or the values I stand for. Emotions can run high, but nothing justifies such behaviour.

"I'll make sure it never happens again."

Manchester United

Manchester United manager Ruben Amorim, speaking after yesterday's match: "Old Trafford was there saying 'we are all here to give a big step up' and I felt that we were not ready.

"Again, these five weeks, when everyone is praising our evolution, I'm always saying the same things. We are not even near what we're supposed to be in this club."

On Everton: "They were the better team. We deserved to lose. Twenty minutes in the game, red card for the opponent. We need to win this game no matter what."

On the Gueye-Keane spat: "Fighting is not a bad thing. Fighting doesn't mean that they don't like each other. Fighting is that you lose the ball and 'I will fight you because we will suffer a goal'.

"I hope my players, when they lose the ball, fight each other."

Image source, Getty Images

Everton

Everton boss David Moyes spoke to BBC Sport about Idrissa Gueye's red card: "I couldn't understand it. I don't think anyone could've expected it. Anthony Taylor told me by the letter of the law if you raise your arm you can be sent off. I don't think anyone else in the stadium would have thought anything of it.

"I quite like it when my players fight with each other because it shows they care and [put the] demands on each other. I'm disappointed he got sent off. He has apologised, praised the team and is grateful for the result. We move on. It was a brilliant goal, a great finish."

Simon Stone
BBC Sport chief football news reporter at Old Trafford

Personally, I couldn't believe both managers felt Idrissa Gueye should not have been sent off last night.

In fact, both remarked at how important it was that players showed they care and do react to each other when things don't go the way you want them to.

I just think the rule is clear. You cannot hit someone in the face.

If that had been two players from opposing sides involved, there would have been no debate about the red card - and the chances are the player on the wrong end of it would have hit the deck and started yelling just to make doubly sure the referee was aware.

Just because players are on the same side, it doesn't mean the rules change.

Blow by blow, as it were.

In the 13th minute, Idrissa Gueye and Vitali Mykolenko got in each others' way in the Everton penalty area while trying to defend an attack. Gueye then tried to play a short pass to Michael Keane to clear the ball away, but he did not react quickly enough.

The botched clearance allowed a Man Utd player to take a shot, which whistled just past Jordan Pickford's post.

Gueye was furious with Keane, approaching the defender with arms wide. Keane, significantly taller than Gueye, squared up to his team mate - resulting in the Frenchman throwing a hand in his face.

Keane pushed him back, and a few more hands were thrown before Everton keeper Jordan Pickford came between the pair.

Referee Tony Harrington quickly showed a red card to Gueye, who incensed tried to confront Keane again and had to be manhandled away by Pickford.

Keane can be seen yelling at Gueye and pointing to his head as the midfielder is pulled away by Everton colleagues. The number 27 is then escorted to the Old Trafford tunnel by Pickford and Iliman Ndiaye.

Image source, Getty Images

Darren Cann
Former Premier League assistant referee on BBC Radio 5 Live's Monday Night Club

We know this sort of thing has happened one or two times before, but it is still quite an unusual incident.

You need full focus at all times, as a referee or assistant referee, even when the ball goes out of play. You have to keep your full focus because you never really know what's going to happen on a football pitch.

Tony Harrington was looking directly at the confrontation. He had an unobstructed view and clearly saw Gueye slap Keane around the face, so in the laws of football that would constitute to violent conduct and a red card is the right decision.

For Keane's push to be violent conduct, it would need to be on the face as opposed to on the chest.

Of course you can still be sent off if you punch somebody in the chest, but I would suggest that Keane's push away was more him telling Gueye to get off him.

Simon Stone
BBC Sport chief football news reporter

Michael Keane was furious with Idrissa Gueye for that incident.

He was telling his Everton team-mate to get lost, but in rather more blunt terms, after he had been shown the red card.

He certainly wasn't offering any support when referee Tony Harrington sent Gueye to the dressing room.

No surprise that the newspapers have that clash between Idrissa Gueye and Michael Keane all over their back pages today...

Image source, Telegraph

Image source, Mirror

Image source, Express

As always, we would love to hear your thoughts about last night's action - both concerning the game, and the impromptu fisticuffs.

We would also like to hear your memories of unexpected events on the pitch - have you ever witnessed a mid-match fight, or anything else out of the ordinary during the game?

Get in touch and we will feature the best responses on this live page.

Watch highlights as after Idrissa Gueye is sent off for striking a team-mate, 10-man Everton beat Manchester United to earn David Moyes his first Premier League win as a visiting manager to Old Trafford on his 18th attempt.

Available to UK users only.

Simon Stone
BBC Sport chief football news reporter at Old Trafford

Ten-man Everton held on for a rare and quite amazing Old Trafford victory after Idrissa Gueye was sent off for striking team-mate Michael Keane after just 13 minutes against Manchester United.

In quite incredible scenes, England goalkeeper Jordan Pickford had to hold Gueye back as he took exception to a few choice words from Keane after Everton had defended a United attack.

Gueye got near enough to slap Keane on the cheek. The action triggered a red card from referee Tony Harrington and more choice words from Keane, who angrily gestured for Gueye to get off the pitch.

Gueye's red card was part of a calamitous opening for the visitors, who also lost skipper Seamus Coleman to injury just 10 minutes into his first league start of the season.

Staggeringly, against a United side who knew victory would take them fifth in the table and on a ground where they have won once since August 1992, Everton then went in front when Kiernan Dewsbury-Hall surged to the edge of the area, then sent a curling effort past goalkeeper Senne Lammens into the top corner.

Predictably, United swarmed all over their opponents looking for a way back into the contest but the equaliser would not come as Everton became the first away team to win a Premier League game at Old Trafford despite having a man sent off.

Image source, Getty Images

Blimey, how about that for a kick-start to the week.

Monday night's Premier League action saw Everton earn a stunning win away to Manchester United - and that only tells part of the story.

Everton midfielder Idrissa Gueye was sent off in the first half for slapping his team mate Michael Keane, the first Premier League player sent off for clashing with a team mate in 17 years.

But that did not stop Everton holding on for a win after Kiernan Dewsbury-Hall's brilliant first half strike.

We will have reaction and fallout from last night's game throughout the morning.