A statement from Championship Birmingham has confirmed that boss Alex McLeish tendered his resignation late on Sunday afternoon. McLeish received the public backing of the Blues board following the club's last-day relegation from the Premier League on the condition that he achieved promotion back to the top flight at the first attempt.
A statement from the club read: "Birmingham City Football Club can confirm that Alex McLeish has resigned as manager.
"Acting chairman Peter Pannu received an e-mail resignation from McLeish earlier today while away on business in Amsterdam.
"No further comment will be made at this moment in time and updates will be released in due course."
The former Rangers boss is now expected to move across the City and take charge of Birmingham's local rivals Aston Villa.