If you look closely in Carl's eye on the cover of this issue, you will see walkers approaching. It's been speculated that zombies may attack the place where Negan and his soldiers are held up, or Negan lets Carl fend for himself and travel back to the Alexandria Safe-Zone. There are other theories that Negan could force Carl into some type of gladiatorial like fight for his life with the Zombies.
What a lovely fella. Pick up
The Walking Dead #105 on Wednesday to see what happens next.