It wouldn't surprise me if he gets traded this winter. Montoyo is staying, possibly long-term/forever, and down the stretch he was playing McGuire over Kirk in the team's most important games of the season. The team will need to keep DH open for Springer (over 30, lower body injuries), Vlad, etc, as a rotating position to rest guys periodically, so Kirk doesn't really help in that area. His trade value likely exceeds the value he's going to give to the team at this rate, especially if Moreno is seen as the real deal.