Arsenal boss was punished for his Saturday-night clash with manager .

Arteta, who replaced Emery in the dugout just over five years ago, disagreed with his fellow Spanish over a throw-in midway through the first half of the two teams' fixture. The pair got into a verbal spat as Emery told Arteta to get back inside his technical area, a frequent criticism over the Arsenal boss.

Referee Chris Kavanagh then came over to the touchline, with fourth official John Busby having had a close eye on the incident. Kavanagh proceeded to show Arteta a yellow card, his first of the Premier League season.

The clash took place just five minutes before Arsenal took a first-half lead through . Goal-line was needed after Villa goalkeeper attempted to claw the ball out following his initial save.

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Arsenal were desperate for all three points after title rivals had left it late to win at . Twelve miles away from the Emirates, scored two injury-time goals and snatched victory.

The gap between the teams was increased to seven points, each having played the same amount of games. Arsenal were without star defender against Villa, forcing midfielder to drop back into the rearguard alongside .

Villa, who lost Amadou Onana to injury after 37 minutes, had a golden chance to take the lead when Partey gave the ball away cheaply and allowed to latch onto it. Unfortunately for the visitors, Watkins' effort ballooned over the crossbar and the international was soon punished.

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Martinelli struck on 35 minutes after converting excellent cross. The Belgian had beaten Boubacar Kamara down the left and whipped the ball towards the six-yard box, where Martinelli had nipped in front of Villa left-back Ian Maatsen.

"What did Maatsen cost? £37million?!" ex-Arsenal midfielder asked on at half-time. He never once turned his head to see where Martinelli was. It's poor."

It became 2-0 just before the hour mark, as Trossard crossed in again and tucked home. It was then Emery who lost his cool, kicking the ball away and receiving his third booking of season which will result in a one-match touchline ban.

Youri Tielemans reduced the deficit shortly Havertz's goal and then hit the post a minute later, as Villa threatened to come back. Watkins then made it 2-2 in the 68th minute, getting on the end of a Matty Cash cross to make for a blockbuster finish.

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