Rangers boss Mark Warburton has told Herald Scotland that he feels it is a shame Ronny Deila is leaving Celtic.
Deila announced his intention to step down as manager at the end of the season, via a statement on the club's official website this week.
Celtic are on the verge of winning their second straight league title under Deila, but Warburton stated that if his brief was to also be successful in European competition, then he can understand the criticism, and why he has had to step down.
Former Brentford boss Warburton said: "I don’t think Ronny moved on because of that result on Sunday. Will it be seen, maybe, as a defining moment, or whatever? I don’t know. But I don’t think it was because of that one result. I can’t believe that for one second.
“What’s the first question a manager asks? It’s ‘what do you expect from me?' What represents success? Ronny must have been told to win the league. If they said to him win the Champions League then he’s failed."
Hopefully nobody at Celtic was asking that Deila go on and win the Champions League as that is an unrealistic target to set, but a minimum standard of qualifying for the group stages may well have been dictated.
Deila failed in this regard in two successive years, and second time around it was not to be excused, with a malaise around the club growing all season to the point they have appeared to lack direction.
Rangers beat Celtic in the Scottish Cup semi-final last week after a dramatic game and penalty shootout, and Warburton explains that he will have pleasant memories of the pre-match time he spent with Deila.
He said: "He came across as a gentleman, I found his company good and he spoke well about football. He was complimentary and we spoke about different players. It is a shame to see a good person leave the country."