Unai Emery has never been one to shy away from showing his emotions as we have seen so far this season for Arsenal, cutting a completely different figure to the calm and static Arsene Wenger.
The Spaniard has also been very bold in his decision making mid-game with many Arsenal fans praising his impulsive nature.
Emery's changes have led to 15 goals for Arsenal so far this season.
One player who has still been prone to criticism is Mesut Ozil, who missed the North London derby due to a back problem and the Bournemouth game due to fixture being too 'physical' for the German.
The ex-Real Madrid midfielder vented his frustration against Crystal Palace back in October after being substituted by Emery.
But according to AFTV, Romain Molina - the best friend and author of Unai Emery's biography - has said that Emery loved the passionate reaction from Ozil.
"Unai loved that reaction," Molina said.
"Maybe it sounds weird for some people but he told me 'if the player is not furious to come off, then they do not care'."
"A player should want to be on the pitch to prove to everyone they are the best and deserves to play.
"If a player is on the bench he should be wanting to get on and prove that he is better and not say 'I don't care'.
Mesut Ozil looks like he will remain sidelined for the Manchester United game, but rumours of his departure may fade with Emery's comments and possibly encourage more Arsenal players to wear their heart on their sleeve.