Martin O'Neill is set to take a hard look at his position as Celtic manager after the side suffered a 1-0 defeat to Rangers at Parkhead. The loss comes on the heels of a 3-0 League Cup triumph over the same opponents at Ibrox, and a tightly contested Premiership clash in which Ryan Naderi’s first‑half goal left Derek McInnes’ Rangers just two points behind Celtic at the top of the table before the international break.

This is O'Neill’s second tenure as the permanent head coach, following two interim spells earlier in the season. The pressure on the 74‑year‑old has been mounting, especially after Celtic’s 3-1 reverse to Ferencváros at Celtic Park on Thursday night, a result that has intensified calls for a reassessment of his future. In the aftermath of the Rangers defeat, O'Neill admitted he was entering a period of self‑reflection. "I genuinely will reflect and see," the Northern Irishman said.

"It’s a matter of whether I can help the team. The manager is supposed to be able to do that.

I will look at that this week." He went on to acknowledge the inevitable impact of age on performance, adding, "I think every single time something crops up and things don’t go so well, age plays a part. And, do you know what, they might be right. I’ll be 110 in two years’ time so it might be time to wrap it up." O'Neill said he would discuss his thoughts with the club’s board and possibly take a few days away from his duties to gain perspective.

When asked what his next steps might be if he concluded he could not improve the side, he replied, "By that time, I will promise you, I’ll let you know. I don’t know. I’ll have a look." He also addressed the growing negativity among Celtic supporters, acknowledging their frustration.

"Well, I think they’re absolutely entitled," O'Neill said. "I mentioned this to you on Friday, absolutely entitled to, of course.

And I’m not immune from criticism. Far from it. Absolutely and utterly far from it.

I think there’s every reason to ask, ‘Can you turn this round? Can you change the whole thing?’" Despite the recent setback, O'Neill reminded fans that Celtic still sit two points clear at the summit, urging a broader perspective.

"We are, as I said, two points clear, so I have to kind of look at the bigger picture at this minute. But I knew that we were in a big, big fight anyway, with both ourselves, Rangers, and Hearts again, who are far from out of anything. It’s a long season ahead.

It’s not the first time I’ve been questioned about my managerial time. So, yeah, I’ll have a look at it. I will reflect and see." Former Celtic boss Neil Lennon, speaking on Sky Sports, offered his own analysis. He noted O'Neill’s attempts to tweak the formation, saying, "He changed formation, he made four changes midweek.

He’s trying to find a recipe to get some fluidity." Lennon praised Rangers for being the superior side, both physically and tactically, and criticised Celtic’s second‑half performance as "totally disjointed, outworked, and battered." He suggested the upcoming international break could serve as a reset for the squad, despite the disruption caused by players representing their national teams. Sky Sports analyst Chris Sutton echoed the sentiment, stating, "Knowing Martin, he’ll be greatly concerned.

I don’t like to disagree with him but it wasn’t a close game. There was a massive gulf between the teams. I can’t actually remember a Celtic team getting such a drubbing at Celtic Park from a Rangers side, which happened today. It looked like Celtic were making it up as they went along.

Rangers were better in every department. Celtic have got big problems. They were smashed by Rangers and that’s a concern." The broader context of Celtic’s season adds weight to the discussion. After a dominant 3-0 League Cup win, the team’s inconsistency in the league has raised questions about tactical cohesion, player morale, and the ability to adapt to high‑pressing opponents.

O'Neill’s previous successes, including league titles and European runs, have set a high benchmark, making any dip in form more noticeable to a passionate fanbase. Looking ahead, Celtic will have a crucial period to regroup during the international break.

The coaching staff must use this time to analyse the tactical shortcomings exposed by Rangers, restore confidence among the playing group, and perhaps consider strategic signings in the upcoming transfer window to bolster depth. The board, meanwhile, will be monitoring O'Neill’s reflections and any proposals he puts forward for a turnaround. In summary, Martin O'Neill is confronting a pivotal moment at Celtic.

The recent defeat to Rangers has amplified scrutiny, prompting the manager to contemplate his future, engage with the club’s hierarchy, and listen to supporters’ concerns. Whether he decides to continue steering the team or steps aside, the decision will shape Celtic’s trajectory for the remainder of the season and beyond.