Ronny Deila is leaving Celtic, with Sunday's defeat to Rangers proving the final nail in his coffin.
The Gers have enjoyed sustained success since the appointment of Mark Warburton a year ago, after success in his first senior role at Brentford, in the English second and third divisions.
Could the Bhoys follow suit? Here are three up-and-coming names to consider if so...
Wigan raised eyebrows when they handed the reins to their former captain with relegation to League One staring them in the face. Sadly, Caldwell could not prevent the inevitable, but has since built an impressive young side in the third tier - one which is on the verge of an instant return as champion. A former Celtic skipper as well, the 34-year-old would bring renewed energy to Parkhead if not the experience.
Huddersfield may be only 16th in the Championship but they'd be right in contention for a top-half finish had the season started in November when Wagner was appointed. A close ally of Liverpool boss Jurgen Klopp - the former USA striker was best man at the German's wedding - Wagner could use the link to his advantage transfers-wise. The progressive young coach was Borussia Dortmund's second team boss when the seniors reached the Champions League's latter stages two years in a row.
After setting the wheels in motion for Burton Albion's promotion last season, Rowett has further enhanced his reputation at Birmingham City. The Blues were 23rd in the Championship and had just lost 8-0 at home to Bournemouth when their former left-back took over. They ended last season in 10th and are on course to better that this time around, despite Rowett operating on a shoestring budget. With the play-offs all but out of reach now, he may feel the time is right to move on.