Celtic endured another European embarrassment, losing 3-1 at home to Hungarian side Ferencvaros in the Europa League on Wednesday evening. The defeat extends a troubling period for the Scottish champions, who crashed out of the Champions League qualifiers to Austrian side Lask despite holding a four-goal lead, then suffered a 3-0 League Cup loss to Rangers last weekend. Manager Martin O'Neill acknowledged the team's defensive vulnerabilities and poor finishing, whilst attempting to refocus attention on an upcoming league derby against Rangers.

Bamidele Yusuf opened the scoring for Ferencvaros before Celtic equalised through Mika Baur late in the first half, but Kristoffer Zachariassen restored the visitors' lead and Daniel Arzani sealed the victory with a sensational strike. In other first-round fixtures, Juventus demolished NEC Nijmegen 5-0 at home, with Dutch goalkeeper Nikolas Polster at fault for multiple goals, whilst Marseille suffered a 4-1 defeat at Besiktas following three consecutive Ligue 1 losses. OFI Crete defeated Hoffenheim 2-0 and RB Salzburg claimed a 1-0 victory away at Levski Sofia.