I can easily explain my thoughts on this one: would love to get Battier, don't think Hou does any two team trade with us.
If you want to propose Battier to BOS, my thought is you need a three team trade:
Battier -> BOS
Sheed+Cash -> Another team
Asstes -> Hou
For example Hou gets draft picks, trade exception, young players. Otherwise why would they give up Battier? They clearly still think they can win now (otherwise, why sign Brad Miller?) Battier, even if somewhat redundant with Ariza, is still a solid bench player. And the reality is he and Ariza are both SF, but they compliment each other - one is a slasher, and one is a shooter. They can both defend either wing spot.