Because honestly, I don't think it is.
I'm guessing fair price is something like #3, 2018 BOS 1st, 2019 MEM/LAC 1st (CHOOSE 1), Zeller, Crowder/Bradley, maybe Rozier? That does still sound like a lot and it's possible Chicago wants even more.
With Butler + Hayward/Griffin, I doubt we beat Cleveland still (and Lebron is staying with Cleveland AT LEAST for next season), regardless if they add George or another star, OR not.
And something tells me George isn't going to Cleveland either despite the rumors. I mean, if the price isn't high on George (since he's declared himself an LA-bound "rental" for now), I fail to see why the "third team" in the proposed deal won't just be willing to trade the few assets straight up for George. Are people REALLY interested in Kevin Love that much?
Anyways, I'd rather sign a max FA (Hayward or Griffin), and draft Tatum and #10 (Great chance Tatum could be there at #5, and if he is, trade down for #5 and #10). Keep building with young core and draft picks and once CLE's reign ends in 2 years, we can strike.
Who knows if Butler even stays here after the last 2 years of his deal are up.
I guess it would look good though if we essentially traded #1 for Butler + Top 5 Pick Next Year (Or 2019). But would Butler really help us against Cleveland? Does he do fairly well on his own in matchups against Lebron (Obviously no one can completely stop him, but some can do a good job making it real hard on him).