Boston trades: #25, cash
Minnesota trades: Anthony Tolliver
It's definitely not a sexy trade, but Tolliver has some potential. He's fairly young, plays with maximum effort, is a pretty good scorer and rebounder, etc.
I don't know if Minnesota wants more draft picks or if they'd move Tolliver; they're deep at PF, especially if they draft Williams, but are pretty thin at center, which is Tolliver's "natural" position despite being undersized. He got sporadic playing time last year, and here's guessing he sees less this year. That being the case, why not trade him?