At this point, the only two players I'd consider "selling high" on are Tyler Zeller and Evan Turner for two reasons:
1) They both may have actually peaked last season. I'm not saying that's definitely the case. They are both young and could grow more. But I think we can all agree that guys like Sullinger and Smart have more room to grow than these two do at this point.
2) Both have rather nebulous roles on this team next year. I think it's possible (though certainly not guaranteed) that both of them could actually be out of the rotation or fringe rotation players next year. Think about it, if Crowder starts and Jerbenko gets time at the 3 (not to mention Stevens going small with IT, Bradley, Smart on the floor at the same time), how much will Turner play? Similarly, if Lee and Johnson start and Sullinger and Olynyk get meaningful minutes, how much is left for Zeller?
So while I'm not in a rush to dump either one of them, I do see both Zeller and Turner as guys who may not help that much this year and as a consequence may see their value diminish as the season goes on.