Celtic U18: every transfer in and out, fees paid and earned, squad market value and €350k earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2024-07-01 | Mitchel Frame | Celtic U18 | Celtic B | — |
| 2024-07-01 | Colby Donovan | Celtic U18 | Celtic B | — |
| 2024-01-01 | Sean McArdle | Celtic U18 | Celtic B | — |
| 2023-09-11 | Evan Easton | Celtic U18 | Sheff Utd U21 | Free |
| 2023-08-01 | Aidan Borland | Celtic U18 | Aston Villa U18 | €350k |
| 2023-07-01 | Jude Bonnar | Celtic U18 | Celtic B | — |
| 2023-07-01 | Francis Turley | Celtic U18 | Celtic B | — |
| 2022-09-16 | Francis Turley | Glentoran U18 | Celtic U18 | — |
| 2022-07-01 | Mitchel Frame | Celtic Youth | Celtic U18 | — |
| 2022-07-01 | Joe Morrison | Celtic U18 | Celtic B | — |
| 2022-07-01 | Evan Easton | Celtic Youth | Celtic U18 | — |
| 2022-07-01 | Aidan Borland | Celtic Youth | Celtic U18 | — |
| 2021-07-14 | Vincent Angelini | Celtic U18 | Watford U23 | Free |
| 2021-07-01 | Mitchell Robertson | Celtic U18 | Celtic B | — |
| 2021-07-01 | Dane Murray | Celtic U18 | Celtic B | — |
| 2020-07-01 | Vincent Angelini | Celtic U17 | Celtic U18 | — |
| 2020-07-01 | Joe Morrison | Celtic U17 | Celtic U18 | — |
| 2020-07-01 | Dane Murray | Celtic U17 | Celtic U18 | — |
| 2019-07-01 | Karamoko Dembélé | Celtic U18 | Celtic B | — |
| 2019-07-01 | Cameron Harper | Celtic U18 | Celtic B | — |