Jim Mann is to step down as chairman of Kilmarnock after just one year in the position.
The 69-year-old took over from Michael Johnston last March with a pledge to fans to be 'driven by the future and not held back by the past'.
But just over 12 months later, he said in a statement: "It is with considerable regret that I have to announce my decision to stand down as chairman of Kilmarnock Football Club at the forthcoming annual general meeting. I will also retire as a director from that date.
"Having been born and bred in Kilmarnock but having spent most of my career working in England, it was a dream come true to be appointed chairman of the club I have supported throughout my life in March 2015. So this has not been an easy decision for me to reach, particularly at this difficult stage of the season with the club in a precarious league position.
"I am now 69 and have suffered some health issues in recent months which have made the task of combining my duties as chairman with other business and personal interests while living in Milton Keynes unsustainable.
"There is no reason other than that for my decision to stand down and I hope that the club's shareholders and supporters will give their full support to the board of directors as it embarks upon the process of appointing a new chairman while steering the club away from relegation.
"I wish Lee Clark, his backroom staff and the players the best of luck in the weeks ahead. Everyone at the club is fully focused on the task at hand and determined to succeed. I have enjoyed working with the club's directors and staff, from all of whom I have received full support and unstinting loyalty. I leave the club in good hands."
Kilmarnock beat St Johnstone 3-0 at Rugby Park last Saturday to ease their fears of automatic relegation from the Scottish Premiership.
They now sit eight points ahead of Dundee United and just four adrift of Hamilton Accies - their likely rivals for a place in the end-of-season relegation play-offs - with just five post-split matches remaining.