Without considering contract status or fit or or anything, I think it goes like this with regards to their overall rankings:
1) George
2) Butler
3) Hayward
I think George and Butler have significant advantages defensively over Hayward, which puts them a step above him in my book. I'd say they're all pretty close offensively, though they excel at differing areas.
Now when you consider fit, contract, and context, I think the opposite order is true: Hayward, Butler, and George.
Hayward obviously gets the nod because he's a free agent and wouldn't cost a Brooklyn pick to obtain, while also fitting well into our offensive scheme and being able to slide in at the 2 to replace AB, who I think is the most obvious candidate to be moved for salary cap reasons.
Butler is next on the list due to his reasonable and longer contract than George. And though Butler isn't the shooter that George is, I think he fits much more nicely at the 2 to replace Bradley than George, who I'm not sure can be a 2 full time and would most likely have to replace Crowder at the 3.
With regards to pure fit, George's superior shooting, size, athleticism, and two-way abilities make him a near perfect fit on our team. However, given his contract status, what it'd take to get him, and our positional needs, I think he's third on the given list.