It's not impossible but I don't think it' likely. Don't forget about the other three Yonko (Shanks, Kaido and Big Mam) or the four existing Shichibukai (Hawk-Eyes, Doflamingo, Bartholomew Kuma and Boa Hancock).I have been thinking lately, although the idea seems idiotic for several reasons, and I know many of you will strongly disagree (I don't even agree, but I thought I'd throw it in the group for the lulz of it).
As we've all noticed, there are 11 Supernovas, the rookies that are bound to make the shit go down in The New World.
Now, theoretically speaking, there should be 7 Shichibukai, and 4 Yonko. Maybe it's just a silly coincidence, but in total those are the same number.
Now, I know most of you will say: That's impossible, Luffy is going to be Pirate King and Zorro would never do that, but simply hypothetically speaking, what do you think? And if so, who should get which position in your opinion?
If anything, Oda's the type of person (in my opinion) that likes to give hints or teasers before something happens and I don't really see anything that would make me believe any of the Yonko or Shichibukai lost their position, also we got a teaser that Buggy was offered the position of Shichibukai but you never know what might happen.
But I can see one, maybe two the most, of the Supernovas holding either rank.