Parkhead manager Wilfried Nancy has insisted he is still "together with the board" and expresses belief that "the team can turn things around" in the face of a concerning 3-1 defeat to Rangers, which represents a sixth defeat in their last eight outings.
The Frenchman praised an "outstanding" first-half display from his side, a period in which they went ahead through Yang Hyun-Jun and spurned several other opportunities.
Yet, their city rivals fought back in the second period, exposing the home side's defensive fragility with a two goals from Youssef Chermiti and a final strike from Mikey Moore.
This outcome sees Rangers draw level on points with second-placed Celtic, who could end up six points adrift leaders Hearts depending on the later result.
Speaking post-match, Nancy commented, "The result was disappointing because we deserved more today, but again we required more goals."
"In the second half, we conceded three goals from throw-ins. It's difficult to accept, but it's reality. This is not about the individuals or the game plan, this is about key instances."
"This is not about myself, this is about disappointing the fans because I know the meaning of this game. I can understand the disappointment, but I also saw what we're capable to do."
"I believe we are really close, there are many things that can be improved. If it was not the case, I would not talk like this. I truly believe we can reverse our fortunes."
He finished by reiterating, "The manager and board are together with the board."
Former Scotland midfielder Michael Stewart offered a brutal analysis: "Unworkable position for Nancy. He looks like a defeated man. The disconnect between the manager and the team is so stark."
"It is not something that can carry on and it should not have occurred. The people on the board who facilitated this should be shown the door as well. Celtic are in an absolute state."
Former Celtic goalkeeper Pat Bonner identified the problem: "The problems aren't high up the pitch for Celtic, the problems are the shape at the back and the ability to defend."
Former Rangers striker and coach Billy Dodds added: "As much as Rangers have done the right things in this second half, Celtic have been just brutally bad."
"Celtic have just collapsed. Something has to give, there is no doubt."
Former Celtic striker Chris Sutton summed up: "We've seen this movie before with Nancy's Celtic."
"You can score, but you've got to defend. This team don't do that."
The post-match mood among supporters was one of anger and calls for action.
Pete: First 45 minutes looked promising, after the break we looked like amateurs. Nancy has a single way of playing and can't react. Get him out now!
Iain: It's very clear for all to see that Celtic cannot play to Nancy's style. These players are not poor players all of a sudden. The answer is obvious.
James: The board are wholly to blame. I feel sorry for Nancy as he should never been appointed in the first place, but he'll be used as the fall guy. We don't have the players for his system.
Andy: Nancy has to go. I've been one of those wanting to give him a chance, but there is no improvement. He has a formation that he refuses to alter. We've been beaten by a poor Rangers team. Nancy must go.
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