Mikel Arteta’s charges were off to a flyer inside the first ten minutes when Lacazette slotted the ball home after debutant Willian’s shot was parried away by Marek Rodak.
The visitors’ advantage were doubled four minutes after the break when Willian's corner was nodded home by fellow debutant Gabriel Magalhaes, before Pierre-Emerick Aubameyang scored the Gunners’ third with a sumptuous effort from another assist from the former Chelsea and Shakhtar Donetsk man.
Speaking with the media after the game, Lacazette revealed Arteta wants his team to be impeccable with their display and admits they are happy after the emphatic win against the Premier League newcomers.
“It was the best way to start the season. We wanted to win and have a clean sheet and respect what the coach wanted. Everyone is happy,” the former Olympique Lyonnais striker said.
"He wants us to be perfect. We worked in the week for this kind of game. We have a lot of big ambitions. I want to help the team to be on top I know it is my job.
"I am really happy [at Arsenal]. It is only the press and other people that say I am not. I want to play and win titles. We want to be aggressive with and without the ball and improve every aspect of our game."
