Board Thread:Questions and Answers/@comment-30325285-20161120231321/@comment-4872828-20170930221425

He's not coming back. All of the episodes have been produced, and there's no role for him at this point. There are quite a few points where this series did not give any closure.

That he got a semi-appearance in "The Creeping Doom" is at least assurance that he was alive.