With what rotation spot? Burke and Martin look deserving of theirs, Schultz is up, and McDougal and the Smiths are still waiting in Charlotte. They already have Kay and maybe Fedde to flip. Both are doing well enough that cutting them for the chance Gio does slightly better doesn't seem optimal. Maybe you could move one of them to the pen, but why would Giolito, already getting a late start to the season, sign on to be a flip candidate rather than just joining a contender now? He clearly wasn't getting the type of offers he wanted, so he put himself in a good position to win on the team tied for the best record in baseball.