67 Hail Hail tells BBC Sportsound Celtic have a glaring problem that needs fixing

Martin O'Neill adjusted Celtic's starting midfield for their Europa League opener against Ferencvaros following a 3-0 defeat to Rangers at Ibrox. Oliver Sørensen was introduced alongside Callum McGregor and Mika Baur, while Camilo Duran started centrally in place of Kasper Høgh, who dropped to the bench.

The lineup change follows concerns over Celtic's lack of energy and running power in the middle of the pitch. This void was created after Arne Engels completed a £22 million transfer to West Ham in August, leaving O'Neill's side needing dynamic players to support McGregor.