Buster Olney has some info (and here) about the financial situation:
The Astros are picking up a lot of the money owed to Lance Berkman in their agreement with the Yankees, and the (Yankees) won't be giving up any major prospects.
We also learn from Mike Axisa that:
Jimmy Paredes was yanked from Charleston's lineup late, he could be on his way to Houston.
If this is true, Paredes was listed by Scout.com as the Yankees' 29th-ranked prospect, and was an international free agent signing. Paredes is a 21-year old infielder (most of his starts at 2B) hitting .280/.312/.408 for his career. We'll hold off until we find out for sure before we start the analysis.