Let's say Eric Milton continues to do what he has done the past couple of starts for the next couple of starts.....not get it done.
DL him for 15 days and bring up Homer Bailey for 3 starts.
If he does the job, you put Milton in the bullpen and ride Homer Bailey.
If he doesn't, you send him back down and put Milton back in his rotation spot, unless of course, a trade is made to bring in another starter, or whatever.
Just a thought. Play with it...tweak it....run it into the ground....