Neil Lennon has led Celtic to two Scottish Premiership titles, two Scottish Cups, into the last 16 of the Champions League, and to a victory over the mighty Barcelona.
During an in-depth chat on the Goals on Sunday sofa, Lennon also spoke about:
His days as a Celtic player
NEIL SAYS: Lubomir Moravcik was one of the best players I ever played with, while I also played with Chris Sutton, Henrik Larsson (pictured), Stiliyan Petrov and Paul Lambert, so we thought we should win all the time and that was a nice mentality to have - but it was only when we didn't win that we realised how important winning was to us and what it means. My last game for Celtic as a player [the 2007 Scottish Cup Final] was emotional and I remember crying; I couldn't have asked for anymore from my time there having worked under two great managers [Martin O'Neill and Gordon Strachan] and got fantastic support from everyone, so I had to take a few minutes and compose myself.
Ireland management team Martin O'Neill and Roy Keane
NEIL SAYS: I had 10 unbelievable years under Martin - who is a brilliant man manager who knows the game so well and brought stability and success to Leicester - and I think international management will suit him at this stage of his career. Roy is an interesting one as I didn't see him [becoming Ireland assistant] but he has vast knowledge of the game and I think his presence and aura in the dressing room and the fact he was one of the best players of his generation will lift the players. I'm sure Roy will have an input in tactics and team selection, even though it's pretty clear that Martin is the manager, and he can only learn from Martin, who is a fantastic personality and someone the players will love.
Northern Ireland's tribulations at international level
NEIL SAYS: We have a small pool of players to pick from so it is a difficult job for Michael O'Neill, who us a very intelligent guy and tactically very good. Every now and then we get a decent result - we have drawn with Portugal away and beaten Russia recently - but we seem to struggle against the smaller teams, so we need to find some little gems. What we had when I played was David Healy, who had a phenomenal scoring record - 36 goals in 95 games is pretty special - but they come along once in a lifetime, so it is pretty thankless task for Michael.
Click here to listen to Lennon reflect on his formative years as a player under Dario Gradi at Crewe.