I know its not a big deal to most but to me it means something. Johnson was never going to be part of the teams long range plans, so why not move him and get a player that might help you down the road.
Thompson is the 13th ranked player in the deep fish system. The left-handed pitcher out of Houston features a fast ball that touches the low 90s, according to Baseball America.
Ok it does not sound like he is a top of the line starter, but to get a guy that can filled out the back end of the rotation is a good thing for a player that was part of future plans.