The Echo understands Sunderland's Under-23 coach Andy Welsh is to join Warren Joyce's backroom staff at Wigan Athletic.
Welsh has been in charge of the Black Cats Under-23 side since Robbie Stockdale was promoted to first-team duties last year.
Reports that Welsh was to leave for Wigan first surfaced in November last year. The Echo understands compensation has been agreed.
Long-serving Sunderland academy manager Ged McNamee and assistant academy manager Danny Philpott have also left the club in recent months.