New Sunderland manager Martin O'Neill has added Hibernian's head of performance Jim Henry to his staff.
O'Neill was appointed as successor to Steve Bruce at the Premier League club at the weekend.
"Hibernian can confirm head of performance Jim Henry has left the club," they said in a statement.
"He joins Martin O'Neill's new backroom team at Sunderland with immediate effect. The club would like to thank Jim for his contribution."
A former Scottish judo international, Henry worked with O'Neill at Celtic and Aston Villa before joining Hibernian in November 2010.
O'Neill took over team affairs at the Stadium of Light on Monday, having watched Sunday's 2-1 Premier League defeat by Wolves at Molineux from the stands.
The 59-year-old will be in charge for Sunday's match against fellow strugglers Blackburn.
Sunderland are 17th in the Premier League, one point off the relegation places, having won only twice this season.
O'Neill has already appointed Steve Walford as his first-team coach and Seamus McDonagh as goalkeeping coach. They replace Eric Black and Nigel Spink from Bruce's backroom team.
Walford has previously worked with O'Neill at Wycombe, Celtic and Aston Villa. McDonagh, who also worked with the Northern Irishman at Villa, has moved from Hull City.