The Red Devils could only draw at Southampton at the weekend which has left them a massive 16 points from the summit of the log and a further eight from the top four.
The Gunners did record a 4-2 win over North London rivals Tottenham Hotspur on Sunday to extend their unbeaten run in the league since losing their opening two matches of the campaign.
A maiden victory for Unai Emery at Old Trafford is priced at (2.95) with the same firm.
Draws are not strange to this epic fixture with the most recent one coming in 2016. Another one stands at (3.50).
United are unbeaten in their last 11 home Premier League games against Arsenal since a 1-0 loss in September 2006 courtesy of Togo striker Emmanuel Adebayor. They have won eight and drawn three games since then and are (1.40) with BetKing to avoid defeat on their turf.
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