Hale has virtually no trade value. Not necessarily none, but virtually none.
Agreed.
The value he'd likely have at this point would be as a throw-in in an Upton or Gattis deal to push the opposing GM over the edge, as in...
1 year of J-Up isn't quite enough to get Jack Z to turn Walker loose, but the inclusion of Hale would give him an extra option to plug in if there's an injury in their rotation.