June 14, 2026, 11:34 a.m. CT With Saturday’s Game 5 victory at San Antonio, the New York Knicks are officially the 2026 NBA champions. And with that, the 2026 offseason is officially underway. The day after the NBA Finals end each year, teams across the league enter an exclusive negotiating window with internal free agents from the previous season’s rosters. That window lasts until the end of the month, when players can enter negotiations with external teams.