You don't have to re-sign a player to a long-term pact just because you traded for him.
Just over two years ago, the Chicago Bulls re-signed then-32-year-old Nikola Vucevic to a three-year, $60 million contract extension following a strong 2022-23 campaign. That season, the Montenegrin big man averaged 17.6 points, 11.0 rebounds, and 3.2 assists while shooting 52.0 percent from the floor and 34.9 percent from beyond the arc.
Although Vucevic was still producing at a high level as he aged, there wasn't much, if any, reason at all to extend him for three more seasons.