Falling 18 points behind leaders and Old Firm rivals Rangers with eight games to go has prompted the club hierarchy to act – after a season of slip-ups, sub-par performances and protests.
Speculation and rumour has been rife on the manager’s future for some time – and the betting markets on his successor have been ever-changing.
We look at who could be stepping in for the former Hibs and Bolton boss as his second spell in charge at Parkhead comes to an end.
Get a year of unlimited access to all The Scotsman's sport coverage without the need for a full subscription. Expert analysis of the biggest games, exclusive interviews, live blogs, transfer news and 70 per cent fewer ads on Scotsman.com - all for less than £1 a week. Subscribe to us today
We look at who could be stepping in for the former Hibs and Bolton boss as his second spell in charge at Parkhead comes to an end.