Bruce, who has left his post as Birmingham manager to take up the job at the JJB Stadium, was expected at a 1pm press conference in Wigan on Wednesday, however, because of what Wigan chief executive Brenda Spencer described as "an issue between Birmingham and Steve" the move has been put on hold.
A club statement said: "The club are confident that the situation, which is beyond their control, will be resolved quickly and the club will be in a position to make an announcement in the very near future."
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