The Cleveland Cavaliers have turned over a fair amount of their roster this summer, replacing a number of bench players with shooters and bringing back Caris LeVert to help glue the bench together. None of their core players were free agents this summer, so the upgrades, while important, happened around that core.
Turnover means saying goodbye even as you welcome new faces, with former comrades spreading out to join other teams. Sometimes a parting can become a reunion delayed; in the NBA, goodbyes are never forever (just ask Dan Gilbert and LeBron James).