| 1. Round | 13/08/2023 | Newcastle United U21 | - | Southampton FC U21 | 5:3 |  |
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| 8. Round | 03/11/2023 | Southampton FC U21 | - | Sunderland AFC U21 | 1:2 | ||||
| 11. Round | 12/01/2024 | Southampton FC U21 | - | Tottenham Hotspur U21 | 2:3 | ||||
| 12. Round | 29/01/2024 | Leicester City U21 | - | Southampton FC U21 | 1:2 | ||||
| 16. Round | 08/03/2024 | Southampton FC U21 | - | Stoke City U21 | 5:1 |
Northern Ireland