Here’s what Kirkman relayed:
Well, there was a lot of breathing room in the comics between them. Whether or not we have the same amount of breathing room, or if we do cut that down a little bit and bring him into the show a little early remains to be seen. But I definitely do think there needs to be some kind of space from a Governor into a Negan. You have to have something of a break in there. So I wouldn’t expect him to be showing up — definitely not in season 4. I don’t know. I wouldn’t expect it too soon. But we are all very excited about the prospect of bringing that guy into the show. The plan is that we will see him eventually.
So no Negan in this season but eventually. Who should play Negan when the decision is made for him to finally appear?