Celtic v Bayer Leverkusen, 30 September 2021
| Score | 4-0 to Bayer Leverkusen |
| Referee | Marco Di Bello |
| Competition | UEFA Europa League Group G |
| Venue | Celtic Park, Glasgow |
| Attendance | 55,436 |
Kick-off: 8.00pm BST
0 Celtic
Manager: Ange Postecoglou
4 Bayer Leverkusen
Manager: Gerardo Seoane