This guy, otherwise known as the nibbler is probably the most cost effective starter who could be traded. They should do what they can to trade him because they could probably get a bunch from a National League team. 

He is not effective, and he's not a #1, 2 or 3. And if they package him appropriatly, they can get a lot for him.

At a minimum, he should be DL'd or removed from the rotation.