He will not.
First, they'll bring Pettite back. CC, Hughes, Pettite, Burnett, Nova isn't the worst rotation in baseball. Then they'll see if they can get an arm for Montero. As I understand it, he's not capable of catching. With Tex at 1B until he dies and the multitude of DH candidates on the roster, he's expendable.
I would say I've answered it.
I thought that for a moment. Then I punched myself in the sack for even considering it. And, if they do, I'll find HH&B and punch them in the sack.