At 29, I doubt it happens. He's a good, sometimes really good, middle leverage reliever. He's gone 9-13, 5-10, and 6-10 (1 early season opportunity last year) in saves over three years. 20-33 seems to lend to his not having the mental part down (and the increase in BABIP suggests the bad pitches in those spots).
hanrahan reminds me of Mike Timlin. Timlin had great stuff and at times was a dominant set up guy, but always seemed to be just inconsistent enough closing to not be a good option.
Back to first basemen - If Texas signs Adrian Beltre, they have to move Michael Young to DH (if they don't sign Vladi or an alternative) or first. If they do move him to first, which I think is the preference, then
Mitch Moreland loses his starts. Lefty, good OBP, had a nice half season but generally not thought of as elite. I tend to think more of him than the source I cite too much. Combining this thread an the Greinke thread, I wonder if, instead of going for Greinke ourselves, we send an MI to Texas for Moreland plus virtually any prospect in their system so that they can complete their package for Greinke. They need an MI to make their deal work.
[edit - good ISO too. he had a down half season stretch when he was promoted to AA in 2009, right around the time I was saying trade Nick to Texas for him, but otherwise he's had a pretty consistent .370+ OBP / .480+ ISO in the minors, and did about as well after his call up].