Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 21.01.2020 | L. O'Connor | Celtic | — | Loan |
| 14.01.2020 | P. Klimala | Jagiellonia | Celtic | N/A |
| 08.01.2020 | S. Sinclair | Celtic | — | N/A |
| 28.11.2019 | C. Hazard | Dundee | Celtic | N/A |
| 24.10.2019 | C. Hazard | Celtic | Dundee | Loan |
| 02.09.2019 | E. Henderson | Celtic | — | Loan |
| 02.09.2019 | G. Taylor | Kilmarnock | Celtic | N/A |
| 02.09.2019 | A. Ralston | Celtic | — | Loan |
| 30.08.2019 | M. Elyounoussi | Southampton | Celtic | Loan |
| 29.08.2019 | S. Welsh | Celtic | — | N/A |
| 28.08.2019 | M. Bauer | — | Celtic | Loan |
| 27.08.2019 | C. Gamboa | Celtic | VfL Bochum | Free |
| 22.08.2019 | F. Forster | Southampton | Celtic | Loan |
| 09.08.2019 | D. Church | Celtic | — | Loan |
| 09.08.2019 | R. Deas | Celtic | — | Loan |
| 08.08.2019 | K. Tierney | Celtic | Arsenal | € 27M |
| 03.08.2019 | A. Gutman | Celtic | — | Loan |
| 24.07.2019 | H. Elhamed | Hapoel Beer Sheva | Celtic | N/A |
| 04.07.2019 | B. Bolingoli-Mbombo | Rapid Vienna | Celtic | € 3.3M |
| 01.07.2019 | L. Morgan | Sunderland | Celtic | N/A |
| 01.07.2019 | M. Shved | Karpaty | Celtic | N/A |
| 01.07.2019 | M. Lustig | Celtic | Gent | Free |
| 01.07.2019 | D. Boyata | Celtic | Hertha BSC | N/A |
| 01.07.2019 | Y. Mulumbu | Kilmarnock | Celtic | N/A |
| 01.07.2019 | Emilio Arturo Izaguirre Girón | Celtic | — | Free |
| 01.07.2019 | S. Allan | Celtic | Hibernian | N/A |
| 01.07.2019 | L. Connell | — | Celtic | Free |
| 01.07.2019 | C. Hazard | — | Celtic | N/A |
| 01.07.2019 | O. Burke | Celtic | — | N/A |
| 01.07.2019 | F. Benković | Celtic | Leicester | N/A |
| 28.06.2019 | C. Jullien | Toulouse | Celtic | € 8M |
| 22.06.2019 | A. Gutman | — | Celtic | N/A |
| 12.05.2019 | C. Miller | — | Celtic | N/A |
| 01.03.2019 | Lewis Bell | Celtic | — | N/A |
| 26.02.2019 | Kundai Leroy Jeremiah Benyu | Celtic | — | Loan |
| 01.02.2019 | M. Shved | Celtic | Karpaty | Loan |
| 31.01.2019 | J. Toljan | Borussia Dortmund | Celtic | Loan |
| 31.01.2019 | M. Shved | Karpaty | Celtic | € 2M |
| 31.01.2019 | Y. Mulumbu | Celtic | Kilmarnock | Loan |
| 31.01.2019 | C. Miller | Celtic | — | Loan |
| 30.01.2019 | L. Morgan | Celtic | Sunderland | Loan |
| 18.01.2019 | J. Aitchison | Celtic | — | Loan |
| 08.01.2019 | V. Bayo | — | Celtic | N/A |
| 07.01.2019 | T. Weah | Paris Saint Germain | Celtic | Loan |
| 05.01.2019 | O. Burke | — | Celtic | Loan |
| 03.01.2019 | C. Hazard | Celtic | — | Loan |
| 28.09.2018 | R. Hendry | Celtic | — | Loan |
| 31.08.2018 | M. Dembélé | Celtic | Lyon | € 2.2M |
| 31.08.2018 | Y. Mulumbu | Kilmarnock | Celtic | Free |
| 31.08.2018 | J. Aitchison | Celtic | — | Loan |