This is why I haven't been too concerned with those griping over what we will do with Green and Butler. I feel as if Geathers will miss some time this season; probably something around four games. With that being said, he is definitely a better safety than Tj.
I see Butler reinforcing the FS position, and Green perhaps transitioning to more of a SS role. He has the frame for it; he just needs to put a little more weight on his frame; whilst hopefully maintaining speed.