I do think Negan will eventaully escape the jail cell, somehow. Then, I'm hoping we could see something similar to what happened in the TV series with The Governor, how he tries to redeem himself, but it doesn't work out. That would be cool if it happened with Negan, with him finding a family and tries to change, but then he ends up not being able to change and then he's killed off, with hopefully Rick or Carl being the one to kill him. What are your guys' opinion?
Or Negan somehow escapes his jail cell, run off Alexandria without being noticed, get back to Sanctuary, murders Dwight, becomes the leader of Saviors again. Next day Carl goes to visit him, and notices he's not in his jail cell. He panicks and runs to Rick. And then i can't think what's next :p
Maybe he'll escape the jail cell somehow, disappear, re-create a new army and return to the Alexandria Safe Zone and kill one of the primary members of Rick's group like maybe Andrea or Michonne and then Rick or Carl will assassinate him.
It would be interesting if he tried to become "good." But I don't think that'll happen. Of course, he did seem to start to "get it" in his final conversation with Rick at the end of All Out War, so maybe...
As far as him getting killed, I think that if anyone kills him, Maggie would be the one with the most reason to.
Negan escapes kills Andrea, becomes the leader of the whisperers and completely destroys the Sanctuary for their betrayal. then he dissapeares for a couple of issues while the communities rebuild. at last he attacks the kingdom, kills Ezekiel and Michonne will become the Kingdoms new revenge driven leader.
Or Negan could end up becoming The Walking Dead's version of Vegeta - a circumstantially coerced ally at first, becoming a reluctant companion having an uneasy alliance with the group midway, before finally metamorphosing into the reformed villain trope (albeit still retaining his badass qualities during his heel run).
negan will get freed by dwight then negan will kill dwight and become leader of saviours again then he will find lucille and then he will finish what he started trying to kill rick the saviours die and negan goes insane, lucille gets shot and chips AGAIN, he gets a gun shoots andrea and then is about to shoot rick in the head and then negan falls and it reaveals that lucille is in the back of his head you see carl pick up lucille holds it in the air and says there are no men only shadows, the only thing keeping us alive is loved ones and then in mid sentance you hear a bang and carl gets shot in the stomach you see him fall and negan looks up and then falls and it cuts to black.