Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 08.08.2019 | K. Tierney | Celtic | Arsenal | € 27M |
| 03.08.2019 | A. Gutman | Celtic | — | Loan |
| 01.07.2019 | M. Lustig | Celtic | Gent | Free |
| 01.07.2019 | D. Boyata | Celtic | Hertha BSC | N/A |
| 01.07.2019 | Emilio Arturo Izaguirre Girón | Celtic | — | Free |
| 01.07.2019 | S. Allan | Celtic | Hibernian | N/A |
| 01.07.2019 | O. Burke | Celtic | — | N/A |
| 01.07.2019 | F. Benković | Celtic | Leicester | 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 | 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 |
| 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 | J. Aitchison | Celtic | — | Loan |
| 31.08.2018 | C. Miller | Celtic | Dundee | Loan |
| 24.08.2018 | R. Deas | Celtic | — | Loan |
| 12.07.2018 | R. Doohan | Celtic | — | Loan |
| 04.07.2018 | N. Çiftçi | Celtic | Genclerbirligi | Free |
| 01.07.2018 | C. Musonda | Celtic | Chelsea | N/A |
| 01.07.2018 | P. Roberts | Celtic | Manchester City | N/A |
| 01.07.2018 | Sam Wardrop | Celtic | Dundee Utd | N/A |
| 01.07.2018 | B. Watson | Celtic | Motherwell | N/A |
| 01.07.2018 | J. Lindsay | Celtic | — | N/A |
| 01.07.2018 | E. Sviatchenko | Celtic | FC Midtjylland | € 1M |
| 01.07.2018 | J. McCart | Celtic | — | N/A |
| 26.06.2018 | S. Armstrong | Celtic | Southampton | N/A |
| 15.06.2018 | J. Thomson | Celtic | — | Free |
| 16.03.2018 | A. Ralston | Celtic | Dundee Utd | Loan |
| 01.02.2018 | S. Allan | Celtic | Hibernian | Loan |
| 25.01.2018 | C. Hazard | Celtic | Falkirk | Loan |
| 19.01.2018 | Mark Hill | Celtic | ST Mirren | Loan |
| 19.01.2018 | J. McCart | Celtic | — | Loan |
| 17.01.2018 | L. Henderson | Celtic | — | N/A |
| 16.01.2018 | E. Sviatchenko | Celtic | FC Midtjylland | Loan |
| 09.01.2018 | N. Çiftçi | Celtic | Motherwell | Loan |
| 08.01.2018 | Kundai Leroy Jeremiah Benyu | Celtic | — | Loan |
| 02.01.2018 | R. Hendry | Celtic | — | Loan |
| 29.12.2017 | J. Thomson | Celtic | — | Loan |
| 23.09.2017 | J. McCart | Celtic | ST Mirren | Loan |
| 31.08.2017 | A. Nesbitt | Celtic | — | N/A |
| 21.08.2017 | N. Çiftçi | Celtic | — | Loan |
| 18.08.2017 | Paul-Joseph Crossan | Celtic | — | Loan |
| 18.08.2017 | C. McCabe | Celtic | — | N/A |
| 17.08.2017 | R. Doohan | Celtic | — | Loan |
| 25.07.2017 | Emilio Arturo Izaguirre Girón | Celtic | — | € 1.4M |