But one of that new-look front three, Alexandre Lacazette, halved the deficit just before the half-time break, powering the ball past Hugo Lloris to bring Arsenal back into the game.
Lacazette was subsequently withdrawn, with Aubameyang moving from the left wing to centre-forward while Nicolas Pepe remained on the right.
Arsenal continued to look dangerous and grabbed an equaliser when the Gabon striker poked home Matteo Guendouzis cross, and Aubameyang believes that front three can get even better.
Asked how he felt the front three clicked, Aubameyang told beIN SPORTS: I think we still need to improve as well.
We did some good things today but as I always say, we can always progress and Im looking forward to playing with those two more.
Lacazette was also asked about the front three, telling Match of the Day: You need to ask the coach if hes happy with the three of us.