O'Neill 'not sure what to make of' Celtic, so what are the issues?

Manager Martin O'Neill expressed uncertainty regarding his Celtic squad following a narrow 1-0 away victory against St Johnstone. The match featured a heavily rotated lineup fielded by O'Neill to assess the depth and performance of his players.

Despite securing the win, the performance raised questions for the manager regarding the team's current state and underlying issues. The sparse details available focus strictly on O'Neill's post-match assessment of the squad's capabilities following the closely contested fixture.