Jordan Hicks might be the most gettable player on this list in reality. He's easily one of the relief pitchers on this year's free agent market, which is heavy on starters, with the most potential. The Astros bullpen is expected to lose three bullpen arms to free agency this year: Hector Neris, Ryne Stanek, and Phil Maton. Neris' loss will be the most deeply felt — he was able to pitch well and, maybe more importantly, often for the Astros in various roles, as a set-up man, occasional closer, and innings-eating middle reliever.
Estimates for Hicks' next contract range around four years, $40 million, which actually wouldn't put the Astros over the $237 million luxury tax ceiling on its own, but would get them perhaps uncomfortably close. Still, Hicks could be a very real option for the Astros, not just distant wishful thinking. If they are going to make any significant moves this offseason, signing Hicks should be a consideration.