I voted No on Tatum, but I would trade Brown for him and if you've followed my posts, I was one of those leading the charge to draft Brown when others didn't want to.
I would send Brown, the Sac pick and the Clips pick for KAT.
On caveat to this though, is Haywood and Tatum play the 3, I don't know if Tatum can play the 2 like Brown can.