There would be no reason to trade him for another bad contract starting pitcher. The only valid reasons to get rid of him would be to save cash and/or open up a spot in the starting rotation for a better starting pitcher.
They could trade him for another bad contract, but only if it meant they were filling up or improving a roster spot in a different area of the team. The areas where I think they could do that are outfield (CF or backup), backup IF, and catcher.
Yosty (YO-stee) n. A collection of games that the Brewers have lost , where you can look at a piece or pieces of management by a manager and reasonably and logically conclude (based on conventional baseball wisdom and factual information available at the time) that he should have done something differently that, along with other factors, might possibly have changed the outcome of the game.