Former Red’s and National’s GM Jim Bowden wrote a column for ESPN naming all the available players at each position. At first base he mentioned Padre first baseman, Yonder Alonso, and in his brief write up about Alonso he mentioned an interesting trade idea.
He’s a first baseman with just two home runs, so he doesn’t have a lot of trade value. That said, he’d be a good fit with the Astros thanks to his .382 OBP; perhaps a swap for a disappointing first baseman such as Jon Singleton is possible.