Celtic boss Brendan Rodgers has experienced a much more challenging time in his second stint as Hoops manager.
In his first stint in the dugout the Northern Irishman went largely unchallenged and dominated the Premiership between 2016 and 2019.
He was unbeaten in his first season with an incredible 106 points and went on to become the first manager in Premiership history to win back-to-back domestic trebles.
This was a feat which he would have almost certainly replicated for a third consecutive time the next season if he hadn't left Glasgow mid-term for a move to Leicester City as his successor Neil Lennon swept up the remaining trophies.
Overall, Rodgers was beaten just eight times in the league across his first two and a half years in the Celtic dugout, but he has already suffered three defeats this season on his return.
Rodgers is targeting a third league title this year which would take him level with Celtic managers such as Neil Lennon and Gordon Strachan.
With that in mind we take a look at the last 12 Celtic managers and how there careers have fared after leaving Glasgow.
9. Martin O'Neill - Currently without a club
Martin O'Neill lifted three league titles, three Scottish Cups and a League Cup, whilst also reaching a UEFA Cup final. Since leaving in 2005, he has managed the likes of Aston Villa, Sunderland, Republic of Ireland and Nottingham Forest. Has been out of football since 2019 and now works as a pundit for TalkSport. | Getty Images
10. Kenny Dalglish - Currently without a club
One of Celtic's greatest ever footballers Kenny Dalglish took temporary charge of the club for 18 games in 2000. After a 10-year break he returned to another former club in Liverpool and lifted the League Cup in 2012. The Reds dismissed Dalglish at the end of his first full season and he was replaced by future Hoops boss Brendan Rodgers. Dalglish has been out of football management since 2012, but remains at Liverpool as a non-executive director. | Getty Images
11. John Barnes - Currently without a club
One of the greatest footballers of the 1980s - John Barnes joined Celtic as manager in June 1999 and was sacked after a disappointing eight-month tenure. Barnes has briefly managed Jamaica and Tranmere Rovers, but has been out of the world of football management since 2009. | Getty Images
12. Dr Jozef Venglos: Died 26 January 2021
Jozef Venglos' side finished runners-up in the Scottish Premiership and Scottish Cup in the 1998/99 season. Is best remembered for leading the team to an historic 5-1 triumph over Rangers. The Slovak later managed Japanese side Jef United Ichihara for a season in 2002. The former Czechslovakia boss died on 26 January 2021 at the age of 84. | Getty Images