Aubameyang chose Dortmund over us 4 years ago, and it was down to Levy trying to push as hard as he could. According to Aubameyang, that really turned him off, and he's vowed never to play for us, ever, as a result.
So, sadly, that is one option that will have to stay in your FM/FIFA saves.
I might not have been paying attention, but isn't he more hype than ability?
Like that dangercunt that Southampton bought who has mostly been anonymous (Bouffal?), Mangala, Zouma etc.