Jayson Stark says the Phillies are looking to trade Blanton whether or not they get Oswalt, and that the Pirates and the Orioles have expressed mild interest. But a trade would have to wait until Spring Training, when teams could see if Blanton had recovered from surgery.
Stark also mentions John Lannan, though not in a way that makes it sound like the Pirates expressed any interest, and some guy named A.J. Burnett. However, he reports that "the Pirates have told several teams that inquired about [Garrett] Jones that they're not inclined to move him." I hope that's at least a bit of a bluff.