Aubameyang is a striker though. I can't see it happening as Mkhitaryan was/is the direct replacement for Kags. Although Klopp has said several times that Kags could play in central midfield. /shrugs.
Mkhitaryan is the main reason I dont see it happening. And I cant see Kagawa playing CM either though Klopp could pull it off. As much as I love Kagawa and want him to succeed here, I'd welcome move such a move.