Oh he will. He wouldn't just up and leave, he'll be sure to make the rounds and let everyone know he's headed back for death.

Which in his case is a very good thing that he will not talk about and might stoically look at the ground the whole time.

(That's grandmaster for love)

But especially for Rosi who's pretty much the closest thing to a friend he has, and he appreciates everything he's done so much. Especially keeping him from becoming a curmudgeonly hermit. He might even say as much! But no promises, words are hard.