Aaron Ramsey roamed forward to form a fluid quartet - scoring his first career hat-trick - while Aubameyang sank deeper to link with the midfield.
Mkhitaryan was reuinted with Aubameyang after joining the Gunners in a player-exchange deal with Alexis Sanchez last month.
'Mourinho required a lot from the players, ' the 29-year-old told. "They are a very competitive team with a lot of quality and sure, it will be a hard game, an unbelievable game and it's going to demand our best performance to win".
Arsene Wenger, at his peak, was a meticulous team-builder, carefully constructing sides with a top player in every position, each one chosen to get the most out of his teammates, every man crucial to the boss's holistic vision.
But could Mkhitaryan repeat his heroics in the North London derby this afternoon?
Wenger seems delighted with the way his new signing has begun, Mirror reported.
In fairness, Mkhitaryan was fortunate to emerge for the second half.
If one moment summed up Mkhitaryan's performance today, it was this utterly terrible cross during the first half... He became the first Armenian to ever join the club and later the first to win a major European trophy.
Let's take a closer look...
According to the Daily Mail, Henrikh Mkhitaryan thinks Jose Mourinho has a different style when it comes to managing his players as well his approach towards them. While Arsenal prised a red-hot Aubameyang from Dortmund, they welcomed Mkhitaryan from the cold. Perhaps trying to cement the point that Aubameyang should be seeking inspiration from the qualities of the French superstar.
Arsenal's new ace Henrikh Mkhitaryan has been staying back after training to work with Arsenal's strikers.