Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 05.02.2026 | K. Karataş | Galatasaray | Istanbul Basaksehir | Loan |
| 30.12.2025 | M. Fofana | — | Istanbul Basaksehir | Return from loan |
| 30.12.2025 | H. Ljukovac | Teplice | Istanbul Basaksehir | Return from loan |
| 12.09.2025 | A. Harit | Marseille | Istanbul Basaksehir | Loan |
| 12.09.2025 | B. Yıldırım | Rennes | Istanbul Basaksehir | Transfer |
| 12.09.2025 | D. Alemdar | Rennes | Istanbul Basaksehir | Transfer |
| 12.09.2025 | J. Kałuziński | Antalyaspor | Istanbul Basaksehir | Transfer |
| 11.09.2025 | J. Kałuziński | Antalyaspor | Istanbul Basaksehir | Transfer |
| 11.09.2025 | B. Yıldırım | Rennes | Istanbul Basaksehir | Transfer |
| 11.09.2025 | D. Alemdar | Rennes | Istanbul Basaksehir | Transfer |
| 11.09.2025 | A. Harit | Marseille | Istanbul Basaksehir | Loan |
| 11.09.2025 | T. Turhan | Grasshoppers | Istanbul Basaksehir | Free Transfer |
| 10.09.2025 | T. Turhan | Grasshoppers | Istanbul Basaksehir | Free agent |
| 10.09.2025 | J. Kałuziński | Antalyaspor | Istanbul Basaksehir | Transfer |
| 10.09.2025 | B. Yıldırım | Rennes | Istanbul Basaksehir | Transfer |
| 10.09.2025 | D. Alemdar | Rennes | Istanbul Basaksehir | Transfer |
| 09.09.2025 | T. Turhan | Grasshoppers | Istanbul Basaksehir | Free agent |
| 30.07.2025 | A. Fayzullaev | — | Istanbul Basaksehir | Transfer |
| 29.07.2025 | A. Fayzullaev | — | Istanbul Basaksehir | Transfer |
| 11.07.2025 | D. Selke | Hamburger SV | Istanbul Basaksehir | Free Transfer |
| 10.07.2025 | E. Shomurodov | AS Roma | Istanbul Basaksehir | Loan |
| 10.07.2025 | D. Selke | Hamburger SV | Istanbul Basaksehir | Free agent |
| 09.07.2025 | E. Shomurodov | AS Roma | Istanbul Basaksehir | Loan |
| 02.07.2025 | Berkay Aslan | FC Augsburg | Istanbul Basaksehir | Transfer |
| 01.07.2025 | H. Ljukovac | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | E. Kaplan | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | E. Karaal | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | C. Sertel | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | F. Nzaba | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | A. Kaygısız | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | E. Karaağaç | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | B. Aydoğmuş | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | M. Arslantaş | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | E. Kartsev | — | Istanbul Basaksehir | Return from loan |
| 01.07.2025 | B. Özcan | Rizespor | Istanbul Basaksehir | N/A |
| 01.07.2025 | B. Özdemir | — | Istanbul Basaksehir | Free Transfer |
| 01.07.2025 | Y. Dilek | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | E. Barlık | — | Istanbul Basaksehir | N/A |
| 01.07.2025 | B. Özyurt | — | Istanbul Basaksehir | N/A |
| 01.07.2025 | B. Çelik | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | A. Touba | KV Mechelen | Istanbul Basaksehir | — |
| 01.07.2025 | Nuno da Costa | — | Istanbul Basaksehir | Free Transfer |
| 01.07.2025 | Nuno da Costa | Kasimpasa | Istanbul Basaksehir | Free Transfer |
| 01.07.2025 | B. Kavraz | — | Istanbul Basaksehir | Back from Loan |
| 01.07.2025 | Lucas Stancic | — | Istanbul Basaksehir | Free Transfer |
| 30.06.2025 | O. Bulut | Besiktas | Istanbul Basaksehir | Transfer |
| 30.06.2025 | Lucas Stancic | Bayern München | Istanbul Basaksehir | Free agent |
| 30.06.2025 | B. Özdemir | — | Istanbul Basaksehir | Free agent |
| 29.06.2025 | C. Sertel | — | Istanbul Basaksehir | Return from loan |
| 29.06.2025 | E. M. Karaal | — | Istanbul Basaksehir | Return from loan |