“I think he was happy with our victory,” said the Arsenal head coach.
“He wants to score and when a striker doesn’t score, I like it if he is angry with this situation.
“But he worked very well today. For me, the last match was the best he has played.
“I think he is coming back to the best Lacazette to help us.”
Arsenal: Bellerin gets mocked by Aubameyang for outfit choice
Arsenal striker Alexandre Lacazette was not happy at being substituted (Image: GETTY)
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Emery also opened up on the performances of Mesut Ozil.
The midfielder was made captain for the match after being omitted from the squad to take on Tottenham earlier this week.
He explained: “Very good response. I think he played like we needed, today.
“His skills, his commitment with us today was very good and he helped us.
Arsenal news: Mesut Ozil was made captain for the win against Burnley (Image: GETTY)