More power to them if they can pull it off. I guess my question would be, from a Yankees perspective, why do it? That team is good enough to win it as is, and all signs point to Lee signing with them in the offseason anyway, so why give up a chip like Montero? Unless they're afraid of the Rays making a run (very possible) or the Sox (doubtful *sigh* with all the injuries) or Lee going to another AL contender like the Twins or Rangers.
I don't know, I think that rotation is good enough now to not warrant giving up a piece like Montero, unless he's another overhyped Yankee prospect.