Clifford won't be England's 7 because he's not an openside, and Eddie Jones wants an openside.
Not sure you can say that with such confidence. I can't say Broadhurst really struck me as an openside (although I may be misremembering). I'd be a bit puzzled if he didn't go for Kvesic, but if he's looking for ball carriers, pace and linking first and foremost, I can see how Clifford might win that one.
But I don't think we really know what Jones wants with England yet tbh.