Martin O'Neill has been confirmed as Celtic's permanent manager after guiding the club through two successful interim spells last season. The 74-year-old secured the Scottish Premiership and Scottish Cup double, ending a turbulent campaign marked by managerial instability and fan unrest. His immediate task is building on that success with a full season in charge.

O'Neill's first challenge is improving Celtic's style of play following criticism of their unconvincing performances during the chaotic campaign. The club's transfer policy faces overhaul after several underwhelming signings, with speculation surrounding key players like Daizen Maeda, Arne Engels, and Reo Hatate expected to depart. Recruitment reforms will be crucial for sustained domestic dominance.

European progress represents the second major hurdle, with Celtic discovering their Champions League play-off opponents in early August. Last year's humiliating exit at this stage contributed to Brendan Rodgers' resignation. O'Neill showed European promise with wins against Feyenoord and Bologna, but needs consistent performances to secure the lucrative group stage qualification.

At 74 years old, O'Neill has hinted this might be his final managerial role, raising questions about Celtic's long-term succession planning. The board must balance immediate results with sustainable future direction while addressing ongoing fan protests against the club's hierarchy. Success on the pitch remains the primary remedy for off-field tensions.