Since the Twins are unlikely to contend next year, I would hope that they start him in Rochester where there is a lot less pressure. If he can perform there, then maybe Deduno gets sent down.
It won't be Deduno since he's already off the 40 man roster. He would have to make an incredibly strong case.
Don't get me wrong. Gibson's AFL performance was very solid considering the hitter friendliness of the league and the most important thing for him was eating innings. If I'm correct, I think Liriano pitched in the Dominican League right after the New Year for a little bit and dominated.