I think the high demand for Dunn is going to allow us to make a deal for Butler or another star from a position of strength. Reports before the lottery where that the Lakers were very high on Dunn.
Since then, the Bulls, Sixers, and TWolves are all very high on him, and many people think he can be one of the top 2 players to come out of this draft. I know he doesn't fill a need for our team, but Ainge can easily suggest that he would take Dunn as the best player available if teams don't take our offers. The market for Dunn is driving up the value of the #3 pick at the right time.
The rest of the pack looks pretty even in terms of value (Bender, Murray, Brown, Hield, Chriss) but Dunn is the guy who is standing out from the pack and making GMs drool over the idea of obtaining him. If we don't get the offer we want, I'm good with taking Dunn anyway and trading him down the line.