Personally, it's not so much Green I am against. It's Green + Booker. Their games overlap so much, it's like owning two Corvettes when most of what you do requires having a truck.
Frankly, if I had my druthers, Booker is the one the Suns should be looking at moving on from. But, at least as of now, they're too obstinate to be looking at it that way. I don't believe a Green + Booker backcourt is ever really going to work on a sustainable basis, and the Suns are just spinning their wheels trying to force it. JMO.