Via MLBTR we find that the Astros (as well as the Orioles and Mets) have expressed interest in the recenty-DFAed Julio Borbon. Texas has expressed interest in a Major-League caliber pitcher with options available.
We'll know soon, as the deadline for Texas to make a deal is at 1pm Central tomorrow.
Further info can be found in this article by Brittany Ghiroli.