Trump Philly's trade by offering Mo Claiborne straight up for Dion Jordan. Claiborne is a proven starter, which is more than you can say about either Graham or Jordan.
I haven't given up on Mo, but anything to help the dline I would be in favor of particularly because this draft is loaded at CB. Personal though I prefer Derrick Morgan of the Titans over both Graham and Jordan if the Cowboys were thinking of dealing MC. I don't hate the idea of Graham either, but really can't see any scenario where Cowboys and Eagles trade though and if you like Graham you'll probably be able to get a similar player in the draft- Chris Smith.
Not very high on Jordan's ability to be a 4-3 DE. Maybe he just needs to some time to get stronger, but I'm just not sold.