Mid draft, so 15 give or take a few slots. Its all about finding a match with a pick in that range of valuable but not too valuable.
Given how well this team is playing and the potential for next year I think keeping him and letting him walk might be the play to maximize next year's potential. I can't imagine he'll accept an extension at the number the C's will offer. Both for money reasons and simply because I think Terry wants to start in the league.
My initial reaction is that Terry Rozier who has proven to be a steal at 16 would fetch back more than his original draft slot. I think if your pick is in the 7-10 range, landing a Rozier-caliber talent would be considered a win generally, so that would be fair value.
Looking back through the few years of picks 7-10 leading up to Rozier's draft I see: Biyombo, Brandin Knight, Kemba, Jimmer Fredette, Harrison Barnes, Terrence Ross, Andre Drummond, Austin Rivers, Ben McLemore, KCP, Trey Burke, CJ McCollum, Julius Randle, Nik Stauskas, Noah Vonleh, Elfrid Payton, Mudiay, Stanley Johnson, Kaminsky, Justice Winslow.
Rozier would be in the top half of that crop meaning pretty good value for that range on average.