Former Home Secretary John Reid is to become chairman of Celtic.
Reid, 60, will succeed Brian Quinn, who will stand down from office at the club's annual general meeting on November 19.
The politician, who is standing down as an MP at the next General Election, said: 'Brian Quinn has been a superb chairman and is an extremely hard act to follow.
'I have been a supporter of Celtic for many years and am delighted to be invited to join the board and carry on the great work that has already been done.'
Reid is standing down at the next general election, after nine ministerial jobs in 10 years.
Brian Quinn had been a Celtic director since 1996 and chairman since 2000.
The Glasgow club said Reid would join the board as chairman-designate on Monday and would take up office at the AGM.
Quinn said: 'I am delighted that John Reid has agreed to take on this role.
'I am confident he will lead the company and Celtic Football Club to an even brighter and more successful future.'
Quinn said he had 'greatly enjoyed' the years he had served Celtic as director and chairman, and paid tribute to his colleagues, saying: 'I will of course continue to support Celtic, one of the great clubs in world football.'
BT Retail director Ian Livingston, 43, is also joining the board as an independent non-executive director.
Reid, who holds 3,000 ordinary shares and 3,000 preference shares in Celtic, has a PhD in history and has been an MP since 1987.
As a senior minister, he had at various times responsibility for defence, transport, Northern Ireland, Scotland, health, and home affairs.
He said in his resignation letter as a minister that he needed a break.
He acquired a reputation as a heavyweight operator called upon by Tony Blair to sort out troubled departments.
After taking on the Home Office brief, he famously described parts of it as 'not fit for purpose'.