Given Wenger's departure from the 'Gunners' at the end of the season, both teams gave the Frenchman a guard of honour before the game and the smile would stay on his face for the entirety of the first half.
In the 14th minute, Lacazette picked up the ball in the box and fired a low strike toward the far post, putting it on a plate for Aubameyang to slide home, breaking the deadlock.
Then, just before the break, Arsenal doubled their advantage through their French striker. Hector Bellerin curled back a cross from the right which Lacazette directed on goal with a nifty poked-volley.