I don't think it's too likely that the Wolves will come away with Derrick Williams in the draft. I think it's less than 50-50.
I could picture:
1) the Wolves fall in love with Kanter at #2 and draft him as their starting center
2) the Cavs fall in love with Williams or Kanter and convince the Wolves to draft for them at #2 while the Cavs give the Wolves their #4 pick (Brandon Knight or Kemba Walker) and other considerations
3) Another lotto team, including possibly the Jazz, convinces the Wolves to make a similar deal to switch picks
4) A whole host of players get offered to the Wolves for #2 and the Wolves consider trading out of the draft or at least out of the lotto. Players offered could include: Jeff Green, James Harden, Tyreke Evans, Tony Parker, Lamar Odom, Jamal Crawford, almost the entire roster of the Suns, Magic, Nuggets, Nets, etc.
This is definitely going to take some time to shake out.