NBA earning potential (even on his "rookie" contract) is much, much higher than he can make in Europe. If Tomic comes over and plays really, really well his first 3 years, the money he can make on his 2nd NBA contract (after the jump in salary cap) is ASTRONOMICAL compared to what he can make in Europe. If the Jazz want him, they offer him the clearest opportunity to reach that. The fact that Quin Snyder reportedly wants him here makes the possibility that he jumps to the U.S. much more likely.
Timing couldn't be better to make it happen. For that reason, I think it will. Hope it will. I think Tomic would replace Kanter's role on the team better than any other free agent (for a fraction of the cost) or rookie (who will take years to develop.) The window for success is open. The Jazz need to maximize the quality of the bench to aspire for playoff success.