Utah gets shooting and a warm body in the backcourt that they desperately need and get to experience full-blown Jimmermania. I saw a recent article from a Utah news source suggesting that they trade for Jimmer so there is at least some interest on their side (sorry I don't have the source).
We get a potential shot-blocking big that Boogie has always wanted. We know management was already interested in him when they worked him out before the draft. Still high bust potential but he's worth a shot and I think Jimmer is fair value.
Who says no?
EDIT: Found the source: http://www.sltrib.com/sltrib/jazz/57038628-87/jazz-fredette-jimmer-guard.html.csp