The Twins starting Pitching is way too thin to hope that adding a rental starter is going to be enough. So far this year Santana has been incredible, Berrios looks very good, and beyond that it's fairly barren. Mejia did have a decent outing last time out and that is promising, unfortunately Santiago has been terrible in May, Gibson is completely broken, and Hughes is cooked. I'd question if trading young assets for a rental is a good idea when the rest of the rotation is so fragile (two very inexperience pitchers, Santiago who seems to have long stretches of poor pitching, and Gibson/Hughes who look a long way from being productive).