I would go for Whiteside, but not sacrificing any of our core rotation or BKN 2017. I would rather make the pick at #1-3 then have Whiteside.
Amir, Jerbeko, KO, Rozier, BKN 2018 should be more then enough. Throw in another 1st if need be.
The Heat are so bad that 3 if not all 4 of those guys would be starting for them! Brooklyn 2018 is another surefire building block, but they don't get 2017 for Whiteside.
I would swap 2017 for 2018 if they also included Justice Winslow, but I doubt they want to part with him.