And here's what the Fans don't seem to understand. The Market. If Kahnle, keeps improving, you could flip Chapman, or Kahnle, he has 3 years of Team control, and get haul back in Prospects.
The best value to Trade to get very good Prospects back now is Relievers. You want to build back your Farm, get Relievers. Every year at the July 31st Deadline Teams are giving up huge Talent in the Minors, for 1 Reliever.