Martin O'Neill shares the Celtic fans' frustrations as he insisted he understood why his team were booed during their loss to Ferencvaros.
The home fans loudly aired their frustrations as they went down by three goals to one in the Europa League, days after being thumped by Rangers in the Premier Sports Cup.
It is another big game in which they have let themselves down after the LASK capitulation in Champions League qualifying.
There is a concern around those performances among the fanbase, prompting those boos this evening.
Asked about that post-match, the manager said: "You know, I've been here 25 years ago where the crowd can react like that there. So it's genuinely nothing new to me at the end of it all.
"I think that they were showing a lot of frustration as well too. At times when we had the ball, we looked as if we were going forward, the next thing you know, we put two passes backwards.
"So those things definitely frustrate you. And that's something we'll have to try and iron out."
Read more
How the Celtic players rated as they lost to Ferencvaros in the Europa League Tony Docherty on Rangers wonderkid, and making Scotland under-21s relevant again
Asked how to eradicate the lack of confidence and the issues that is causing, O'Neill went on: "Well, we have to do it.
"I think your point is right. I think that when you lose a little bit of confidence, then you become tentative. And I think this is it.
"I think that the great players play through a crisis of confidence. Everybody's had it at some stage or another. But for us, we have to try and battle through that.
"Obviously, I'm doing a press conference tomorrow, so we can talk more about the game on Sunday, more in depth. But for us, really, we've got to try and get a little bit of energy back into the team again and just be prepared. It's late Thursday evening.
"We're in tomorrow and Saturday and just get ourselves prepared. Now how we restore confidence, I think, obviously is really essentially, and it's almost a cliched phrase, get on the front foot, be on the front foot, win second balls. The part of the game that people seem to have some sort of disdain for but still exists."
Celtic face Rangers again on Sunday, this time in the league, and the 74-year-old admits that one takes on added importance after tonight's result.
"Yeah. The last time there was an international break, I think it was March, when we played badly against Dundee United. So I don't want that to happen again.
"But yeah, Sunday's a big game. It's a big game anyway, regardless. And we'd want to... Well, we will be still actually in front regardless of the result by the time the international break starts.
"But even so, we'd want to put on a proper performance against Rangers for the fans and for ourselves," he added.
