I don't have any interest. I'm sure he would be an upgrade defensively considering how awful Reynolds and Betemit have been. However, I'm not sure he brings enough to the plate to warrant him being on the 25 man roster. Betemit looks alright at the plate and Reynolds is better at getting on base and has much more power than Miggy. On top of that, Betemit can at least play a game or two in the OF, 2B, or 1B while Reynolds can play an alright 1B and in a pinch likely play the OF.
I mean if he hit like the Miggy of old in the minors and forced his way that is one thing but I would make him really force his way onto the team because I'm not sure he brings much to the table.
Plus, if Roberts actually comes back and is able to play 2B they can move Andino to 3B so they wouldn't be as desperate to upgrade 3B defensively.