J.P. Estrella and other Michigan players can re-enter the transfer portal despite the spring deadline because Dusty May left to coach the Dallas Mavericks.
NCAA rules grant a 15-day portal window after a coaching change, with the clock starting five days after Michigan hires or publicly announces a new head coach.
Estrella, a 6-foot-11 forward, transferred from Tennessee to Michigan on April 9 after three seasons with the Vols and now faces fresh uncertainty on the reigning national champions' roster.
Tennessee has an open scholarship, but a return appears unlikely after the Vols used portal resources to rebuild their lineup with transfers including Juke Harris, Jalen Haralson, Dai Dai Ames and Terrence Hill Jr.