Give him time, don't forget his first red card was a debatable one, other refs might have just given a yellow card and the one against Burnley came about because he gave the ball away while trying to make a simple short pass to a colleague and I think frustration made him tackle like he did. (justarsenal.com)
Anyone who claims that the former Man United youngster is «not that sort of player» may be indeed correct, after all this was the 22 year old's first red card, but he will have to take a long hard look at himself in the mirror after this incident and may find himself on the end of a long ban from the game. (caughtoffside.com)
I give Aubameyang 3 games before his first red card because of the physicality of the EPL. (justarsenal.com)