United went into the game with serious injury problems in defence, but Eric Bailly, who has struggled for form and fitness this season, starred in the makeshift defence with an accomplished display against Aubameyang.
Emery said: 'The 18 can be for Saturday and also we are doing one plan with him, maybe he can play against Qarabag. United equalised soon after when Anthony Martial scored his 7th goal of the season on his 23rd birthday.
The same could be said of United but they did move the ball more purposefully and perhaps there was also a case that Arsenal were short of energy due to their efforts against Tottenham to win the north London derby so thrillingly on Sunday. Following Bernd Leno's diving save off Marcos Rojo's free kick, Herrera saved the ball from rolling out, crossing it back to Martial for the equaliser.
But you can always rely on social media to call you out if you've made a mistake - and that's exactly what Twitter did. "For me, it is very good".
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Antonio Valencia, Luke Shaw, Ashley Young and Diogo Dalot would all be more comfortable in a wing-back role as well, so United have the players to play it. Lacazette came on shortly afterwards for Arsenal and Rojo's mistake allowed the substitute to score within five minutes.
To make matters worse, Lacazette's joy lasted just a matter of seconds at Old Trafford, with United scoring virtually straight from kick-off as the spoils were shared in a 2-2 draw. The draw meant United have picked up only three points from their last four matches and remain eight points off the top four.
But in all the drama, let us not forget what Marouane Fellaini did. Now the Red Devils have a manager who demands his players are mad dogs, and we have players pulling the hair of opposition players. He deserved it for his three shots on target, more than any other player.
Arsenal stretched their unbeaten run to 20 games, but failed to take advantage of two gifts from the hosts as United's winless run in the Premier League extended to four matches.
And how Old Trafford needed it during this most soporific of seasons.