Birmingham's season has been one fraught with instability and change; a change in ownership and management has seen Birmingham's season stutter and the club enter free-fall.
The change in ownership and manager meant that the January transfer window was one of crucial importance both for Birmingham City and Gianfranco Zola.
As part of a season of change, over the past two transfer windows, there has been a number of incomings and outgoings as the club have looked to progress further up the table.
Most of the players that have moved on have been squad players who have failed to make an impression at the Championship club.
There may be some regrets about some of the squad players who after leaving Birmingham City have gone on to thrive for their new club.
FLW writer Elliott Wheat-Bowen looks at two former Birmingham City players who the club might regret letting go.
James Vaughan
After leaving Birmingham City by mutual consent in the summer, James Vaughan opted to drop down a division to join Bury.
The former Norwich and Huddersfield striker had a short and unsuccessful stint at Birmingham City where the 28-year-old striker failed to score in 15 appearances for the Blues.
However, since dropping down to League 1, James Vaughan has re-found his form and fitness as he has proved that he is one of the most prolific goalscorers in the Football League when he is fit and firing.
James Vaughan's consistency and prolific scoring has meant that only Sheffield United's Billy Sharp has scored more times than him in League 1 this season, which has attracted the attention of a number of Championship sides including his former employer Birmingham City.
With twenty goals in twenty-seven League 1 appearances, James Vaughan has really thrived since leaving Birmingham City.
Mark Duffy
Another player who has dropped down a division since leaving Birmingham City is 31-year-old midfielder Mark Duffy who joined Sheffield United on a free transfer in the summer.
Having made only seven appearances for Birmingham City after joining the Blues from Doncaster Rovers, it seemed almost inevitable that Duffy would leave in search of regular first team football.
The move to Sheffield United has proved to be a successful one as the former Birmingham City midfielder has been ever-present for the South Yorkshire side this season.
Occupying the right midfield slot in Wilder's 3-5-2 formation, Mark Duffy has featured in all but three of Sheffield United's League 1 matches this season.
Having failed to make an impression at Birmingham City, Mark Duffy has thrived at Sheffield United.