Birmingham caretaker manager Eric Black has quit the club and intends to join boss Steve Bruce at Wigan.
Black has built up a good partnership with Bruce
Black was assistant to Bruce, who left Birmingham to take over as boss at Wigan last week, and is now set to follow him to the JJB Stadium.
The Scot was in temporary charge at St Andrews for just one game as Birmingham lost 2-0 to Portsmouth on Saturday.
A Blues statement said: "He had been here since July 2004 and leaves with the best wishes of all at the club."
Birmingham are set to unveil Alex McLeish as their new manager after he resigned as Scotland boss on Tuesday.
Black was also a contender to fill the vacant manager's post at the club.
He is believed to have held talks with the Birmingham board after last Saturday's game but was given no assurances, which led to him leaving the Midlands outfit.