1) No Future - Diop, Tyrus, Williams, McRoberts, Gordon
I just want to clarify that I wouldn't be surprised if Gordon was still here next year, but he's clearly only on the team until someone else will take him or his contract expires
2) Short Term - Sessions, Adrien, Mullens, Henderson, Taylor, Haywood
Sessions is going to have too much value next year as a productive expiring, and is too redundant with Kemba, to not trade him for value while we can. Henderson and Mullens are both due paydays this summer, so whether they're done with the team in two months or here for another half-decade depends entirely on what sort of price tag they wind up carrying and whether the team goes big or small in the draft. Likewise, Taylor depends entirely on what happens when his rookie contract is up - he's a great value on a minimum deal, but I wouldn't want to pay him $8 million a year to be a backup.
3) Long Term - Kemba, MKG, Biz
There may not even be a single all-star appearance made between the three of them, but Kemba and MKG are already solid young players, and Biyombo's potential payoff is worth more to Charlotte than any value he carries in a trade scenario. Any of the three could be had in the right trade, but these are the guys I would be focused on developing for the future.
EDIT: It's looking more and more unlikely that Charlotte winds up with Portland's first rounder this year, especially if it becomes clear that the Blazers would be better served tanking than trying in the last two weeks of the season. Brewer is redundant with MKG and you get enough rangy athleticism off the bench with Taylor as it is, not to mention that next years' top ten is heavy with small forwards. Also, whatever offer sheet Pekovic signs will be matched by Minnesota, so don't even bother tying up your free agent money for a couple days.