As someone else has mentioned, I think the optimal situation here is that you somehow trade Stroman for the best prospect you can get, replace his production by trading PCA+ for an available starter (preferably with some additional years of control), then sign Bellinger to a 5 year deal. Obviously the order those things would have to happen in makes it highly impractical and unlikely, but that's my ideal scenario even with the talk of the underlying stats being a little suspect for Bellinger.