Celtic’s fortunes took a dramatic turn in the 2025‑26 season when manager Brendan Rodgers resigned and former manager Martin O’Neill was called back to steady the ship. Rodgers had left the club after a heated clash with principal shareholder Dermot Desmond, a dispute that culminated in a public statement from Desmond accusing Rodgers of being “divisive, misleading and self‑serving.” The announcement came on the night of 27 October 2025, following a 3‑1 defeat to Hearts that left Celtic eight points adrift in the title race. Rodgers had already been vocal about the lack of investment in key positions, citing the loss of forwards Kyogo Furuhashi, Nicolas Kuhn and Adam Idah, and the club’s failure to replace them before the Champions League qualifiers.
In the wake of Rodgers’ resignation, the club’s website announced that 74‑year‑old Martin O’Neill would take charge on an interim basis alongside assistant Shaun Maloney while a permanent appointment was sought. O’Neill, who had not managed a club since 2019, expressed surprise at the offer but accepted the role. He immediately delivered a 4‑0 victory over Falkirk at Celtic Park and later guided the team to a 3‑1 win over Rangers in the League Cup semi‑final, securing a place in the final against St Mirren. Despite a 3‑1 loss to Midtjylland in the Europa League, O’Neill’s tenure saw Celtic win seven of eight matches, including a historic 3‑1 triumph over Feyenoord in Rotterdam that positioned the club for a strong run in the knockout stages.
When Wilfried Nancy was appointed in December, his spell lasted only 33 days, during which Celtic suffered six defeats, including the cup final loss to St Mirren and a home derby defeat to Rangers. Nancy’s brief tenure made him the club’s shortest‑serving manager. O’Neill returned a month later with a clear mandate: secure the league title. He delivered a dramatic 3‑1 win over Hearts on the final day of the season, clinching the title and completing a double for Celtic. In June, after a successful interim period, O’Neill signed a one‑year contract with an option for a second year, becoming the club’s permanent manager.
The season remains one of the most turbulent in Celtic’s recent history, but O’Neill’s leadership steadied the club through managerial upheaval, restored confidence in the squad, and ultimately led them to a league and cup double. His return is widely credited with salvaging a season that could have ended in crisis, and the club now looks forward to building on the stability he has provided.