The alleged comment quickly spread across X, Facebook, Instagram, and fan forums, with thousands of supporters weighing in. Rangers fans largely found the exchange hilarious, praising Röhl for showing confidence ahead of what promises to be one of the most fiercely contested Scottish Premiership seasons in recent memory.

Celtic supporters, however, were far less amused.

Many described the remark as disrespectful, arguing that O’Neill remains one of the most respected figures in Celtic’s modern history and deserves greater respect from rival managers.

One furious fan wrote online:

“Martin O’Neill is a Celtic legend. If that comment is real, it’s completely unnecessary.”

Another supporter added:

“Focus on your own team. Leave our Manager out of it.”

Meanwhile, Rangers supporters were quick to defend their manager.

“Football rivalry is supposed to be fun,” one Rangers fan posted.

“If Celtic fans can dish it out, they should be able to take it too.”

Another commented:

“Röhl hasn’t even started the season and already has Parkhead worried.”

The incident has only intensified anticipation for the upcoming campaign.

Rangers are desperate to reclaim domestic supremacy after another season in which they found themselves chasing Celtic. The Ibrox club’s supporters believe a new era under Röhl could finally provide the consistency and tactical discipline needed to challenge their rivals over a full season.

The German coach has arrived with a reputation for modern football, strong man-management, and a willingness to make bold decisions. Since taking charge, he has repeatedly stressed the importance of building a winning mentality and restoring Rangers to the top of Scottish football.

His confidence has been welcomed by much of the Rangers fanbase, who have grown frustrated by years of falling short in key moments.

For Celtic, the objective remains clear: retain their position as Scotland’s dominant force.

The Hoops continue to boast a talented squad, a winning culture, and a fanbase that expects trophies every season. Any suggestion that their grip on Scottish football could be loosening is always likely to provoke a strong reaction.

That is why the alleged Instagram exchange has attracted so much attention.

It is not simply about one social media comment. For many supporters, it represents the latest chapter in the never-ending psychological battle between Scotland’s two biggest clubs.

Former players, managers, and club legends often become symbols of that rivalry. Martin O’Neill’s place in Celtic history is unquestionable. He transformed the club into a force capable of competing at a high European level while also delivering domestic success.

Any perceived slight toward a figure of his stature is guaranteed to generate headlines.

Whether the alleged comment was intended as a joke, a piece of harmless banter, or something more serious, it has certainly achieved one thing: getting supporters talking.

The controversy has dominated fan discussions throughout the week, with some arguing it demonstrates confidence from the Rangers manager and others insisting it crosses a line.

Interestingly, neither Rangers nor Celtic have issued any official statement regarding the matter. O’Neill himself has remained silent, refusing to be drawn into the social media storm.

That silence has only fuelled speculation.

Some fans believe the entire incident has been exaggerated, while others insist it reveals the mindset of a Rangers side eager to challenge Celtic both on and off the pitch.

One thing is certain: when the new Scottish Premiership season begins, every meeting between Rangers and Celtic will carry even greater significance.

The Old Firm rivalry has always been built on passion, history, and fierce competition. Incidents like this only add another layer to the story.

For Rangers supporters, the alleged comment is being celebrated as a sign of belief and confidence from their manager.

For Celtic fans, it is being viewed as an unnecessary attack on a club Manager.

And for neutral observers, it is another reminder that in Scottish football, even a few words on social media can create headlines across the country.

As the countdown to the new season continues, all eyes will be on Röhl, O’Neil , and the inevitable clashes that lie ahead.

If the reaction to one Instagram comment is this explosive, imagine what will happen once the football actually starts.