What are Guzman's problems? I mean why is he getting injured? If it is mechanical, solve them or trade him for what you can get because he will never be healthy. If it is happening when he gets tired and his mechanics break down, build up his arm strength/endurance, put him in the pen, or trade him for whatever you can get. But solve his problems. Injuries don't just happen, they occur for a reason. Find out what that reason is, fix it or get rid of him. I don't care how dominating he can be. He cannot stay healthy. he is no good if he can't pitch.