If we could only get one attacker this summer, I'd want it to be a fast, goalscoring winger. That just seems to be more of a missing area for us. But if we can get two attackers, then why not Gotze?
Klopp knows him far better than any of us, obviously, and if he's the number one target as per the Paul Joyce quotes above, then who am I to say otherwise?
Presume he'd play centrally? We've normally used Lallana or Firmino in that slot, so I guess one of them will be forced wide. If we get a winger as well... well, rotation becomes easier!