Bradley would definitely work.
Why is Cleveland looking for facilitators? They have LeBron and Kyrie. They need defense in their backcourt to play alongside Irving. Delly had a good playoffs, but he's not ready to start on a great team. Bradley is a major upgrade to JR Smith - he can provide defense while having the same impact on offense (if not better - think of the open shots he'd get).
Now that I'm thinking about it, Bradley would be overpaying. If the goal is to move up in the draft, just give them next years pick. And why would we want to help out Cleveland if they will be our main competition in the East for the next 5+ years.