Throw in Jeff Gordon (lost him to Hendrick in 1992) and Kasey Kahne. He's going to lose Edwards more than likely. On the plus side, it'll open up a seat for Trevor Bayne. On the down side, Bayne would probably be better off had he stuck with Michael Waltrip.
And to be fair, Roush told Kurt Busch to hit the road after he had put up with too much of his shit. Getting arrested for drunk driving before Phoenix was the straw that broke the camel's back.
My thing is, if Biffle and Edwards both leave, where the hell are they going to go? Not a ton of great seats available after this year. Can't go to Petty, that's basically a Roush satellite team. Gibbs could do one more car maybe. Childress might, but Ty Dillon will be moving up to Cup in a year or two. Hendrick is full, as is Stewart. MWR maybe? I could see Edwards there.
Some of these older guys may end up having to do Nationwide before too long. With guys like Larson, the Dillons, and Chase Elliott, drivers that haven't done anything like Edwards, Biffle, Kahne, Newman and others are going to have to start looking over their shoulder.