They need to do this, he's way to inconsistent as a starter, it's not working out, but he has so much potential & electric stuff when he's on. He's not coming back here as a starter, they're not gonna want that, so he'll more than likely wind up in the NL, where he'd probably succeed, like Burnett. He was almost un-hittable in the bullpen a few years ago in the playoffs, so they should do this now, that way he'll get used to the bullpen. He has the stuff to take over for Mo & be successful in the closer spot.
Just my 2 cents lol