Jerry Crasnick says:
Lance Berkman remains at top of #astros DH search. Cost still an issue in bringing Big Puma back to Houston.
— Jerry Crasnick (@jcrasnick) December 12, 2012
Their interest was first reported a month ago, and speculated about as a natural fit well before that.
That said, the Astros front office as currently constructed (i.e. a lot of smart people) are going to almost certainly make this a baseball decision, not an emotional or nostalgic decision. If Berkman wants to be paid as a guy who just played a 32-game season thanks to injuries and is looking to bounce back, cool. If he’s wishing to be paid as a memory of good Astros days past, it’s probably not gonna happen.