Unfortunately, the cupboard is sparse for fresh 4th and 5th starters. As you mentioned, Mejia is not yet dominating, Gibson needs time, and other guys in AAA are either non-prospects (Slegers) or retreads. The real problem looks like injuries. The Twins appear to be hit by a lot of minor issues landing their highest pitching prospects on the DL. Chargois and Reed are two of the top guys in Rochester...DL. Same time, Stewart, Jay, Gonsalves and Jones all are injured in AA. This does still leave two starters that might be okay in the 5th spot: Slegers and Felix Jorge. Of the two, Jorge is on the 40, but it can't be too tough to figure out a guy to drop for Slegers. Thing I like about Jorge is that he has always been a stingy control pitcher, very consistent, and he doesn't seem to mind pitching deep into games. Slegers is hot, and he's been doing it against better competition. I could go either way, or both.