The 74-year-old has agreed to a one-year deal, with the club holding the option to extend it by an additional season.
The Northern Irish coach — who previously managed Celtic FC from 2000 to 2005 — returned to Parkhead for two caretaker spells last season, separated by the brief reign of Wilfried Nancy, who was dismissed after only 33 days in charge.
Under Martin O’Neill, Celtic staged a dramatic comeback to clinch the Scottish Premiership title on the final day of the season with a 3-1 victory over Heart of Midlothian FC, who had spent much of the campaign at the top of the table.
Just one week later, O’Neill guided Celtic to Scottish Cup glory with a win over Dunfermline Athletic FC, sealing a domestic double.
The success marked his ninth major trophy as Celtic manager, adding to a remarkable record that includes three league titles, three Scottish Cups and one Scottish League Cup during his original spell at the club.
Artificial intelligence seems to be everywhere these days, especially with the 2026 World Cup fast approaching on June 11. Social media is flooded with predictions, simulations and AI-generated forecasts claiming to know how the tournament will unfold.
Rather than relying on algorithms or data models, I decided to make my own predictions using the most reliable supercomputer available — my own mind.
The 2026 tournament will feature a record-breaking 104 matches following FIFA’s expansion to 48 teams, an increase of almost 40 percent compared to the previous World Cup. However, I stopped at 103 predictions, choosing to skip the third-place playoff altogether.
So, without artificial intelligence or complicated simulations, here is one person’s attempt at forecasting every match of the 2026 FIFA World Cup.
