You already knew that Todd Collins was in. Jason Campbell is very much in but he's also very much recovered from a knee injury suffered late last season. Per an interview with the 'Stache at the official site:
A: "I don't feel [the injury] at all. I feel like I'm 100 percent. I'm healthy. I'm back working out and trying to get myself in the best shape possible."
A: "I haven't done that in a while. [Laughs] Maybe this year I might slide a little bit more, but I don't want to take away from my game and not do the things I know I can do."
Good news for Jason and Todd Collins means bad news for Mark Brunell. Per Covering the Redskins: