Starting just his second Premier League game of the season, the Gunners winger was dealt his marching orders thanks to VAR in the 51st minute.

After a brief look at his pitchside monitor, referee Anthony Taylor brandished the card at Elland Road.

Sky Sports commentator Martin Tyler branded the headbutt ‘idiotic’ as he said Pepe had ‘let his side down’.

Footage showed the pair pushing each other minutes earlier, before clashing again when Pepe saw red.

Leeds, who dominated the first-half as Raphinha and Patrick Bamford went close, ramped up the pressure on Arsenal following Pepe’s dismissal.

Bernd Leno produced a superb one-handed save to deny Stuart Dallas from close-range as substitute Rodrigo hit the bar in the 79th minute.

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