realignment

USC and UCLA, two of the Pac-12's flagship programs, are planning to leave the conference for the Big Ten as early as 2024 and a move is considered imminent, sources confirmed to ESPN on Thursday.

Bob Bowlsby, who has led the Big 12 since 2012, and most recently steered it through the tumultuous announcement of the departures of Texas and Oklahoma, will "step away from the Commissioner's chair" later this year, the league announced on Tuesday.