Massimo Cellino felt the number was unlucky and it has not been worn since May 2014.
Leeds United did not enjoy the best transfer window during the summer of 2011 as they prepared for their second season back in the Championship.
Glasgow Rangers have been linked with making a move for Port Vale goalkeeper Jak Alnwick.
HITC Sport's run-down of Sheffield United's greatest ever players continues with Michael Brown
Leeds signed just three senior players in the January transfer window.
Port Vale midfielder Michael Brown says that the Leeds United players cannot afford to take it easy.
The absence of an experienced midfielder could cost Leeds United Championship survival.
All the latest summer transfer news from League One...
Leeds United could be set to descend into more chaos after Brian McDermott was finally sacked as manager by Massimo Cellino late on Friday evening.
Leeds United's Michael Brown may be labelled as 'past it' by some, but against Birmingham City he left few in doubt he was key to their impressive 3-1 win.