I'd sell the farm for established players say like
Trade 1= Sully, Turner, Zeller, IT and Four 1st (2 Brooklyn, 2 Celtics 1st), for Cousins.
Trade 2= AB, KO, and 28th for Ibaka
Trade 3=Rondo TPE and protected 2nd for Iggie +30th
Not for just Winslow
Smart, Young/AI, Crowder, Ibaka, Cousins is a group worth banking on.