Josh Rupe has reportedly cleared waivers, and the Rangers going to send him to extended spring training so he can stretch out his arm before heading into the rotation at AAA Oklahoma.
I can only assume, based on the last reliever-turned-starter, that if Rupe succeeds in the rotation, he will be promptly stuck back in the bullpen.
This will be an interesting few months for Rupe...he'll be a minor league free agent after the season if the Rangers don't add him to the 40 man before the end of October, and I'm not sure what he'd have to show in Oklahoma for the team to decide to do that.