Getting Miller would be a Hail Mary /make the playoffs this season type move. Dude can be pretty intense and its what's caused locker room issues in Vancouver. Not sure if that would work here but its worth taking into consideration. If he doesn't immediately click and we don't make the playoffs, I wouldn't be surprised if we're looking to move him in a couple of years.
If he's locked in, he's a top 5 all-rounded beast, but if he's not locked in he can be a defensive liability like no other. 5 more years after this and he'll be 37 at the end of the contract.