Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 05.02.2026 | K. Karataş | Galatasaray | Istanbul Basaksehir | Loan |
| 30.01.2026 | M. Fofana | Istanbul Basaksehir | — | Free agent |
| 29.01.2026 | M. Fofana | Istanbul Basaksehir | — | Free agent |
| 14.01.2026 | H. Ljukovac | Istanbul Basaksehir | — | Loan |
| 02.01.2026 | Ö. Beyaz | Istanbul Basaksehir | — | Loan |
| 02.01.2026 | D. Türüç | Istanbul Basaksehir | Konyaspor | Free agent |
| 30.12.2025 | H. Ljukovac | Teplice | Istanbul Basaksehir | Return from loan |
| 30.12.2025 | M. Fofana | — | Istanbul Basaksehir | Return from loan |
| 30.12.2025 | D. Türüç | Istanbul Basaksehir | Konyaspor | Free agent |
| 12.09.2025 | D. Dilmen | Istanbul Basaksehir | — | 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 | D. Dilmen | Istanbul Basaksehir | — | Loan |
| 11.09.2025 | T. Turhan | Grasshoppers | Istanbul Basaksehir | Free Transfer |
| 11.09.2025 | E. Surul | Istanbul Basaksehir | — | Free agent |
| 11.09.2025 | A. Harit | Marseille | Istanbul Basaksehir | Loan |
| 10.09.2025 | E. Surul | Istanbul Basaksehir | — | Free agent |
| 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 |
| 04.09.2025 | M. Arslantaş | Istanbul Basaksehir | — | Free Transfer |
| 04.09.2025 | M. Arslantaş | Istanbul Basaksehir | — | Free Transfer |
| 03.09.2025 | M. Arslantaş | Istanbul Basaksehir | — | Free agent |
| 02.09.2025 | P. Szysz | Istanbul Basaksehir | Arka Gdynia | Free Transfer |
| 31.08.2025 | S. Okaka | Istanbul Basaksehir | — | - |
| 31.08.2025 | P. Szysz | Istanbul Basaksehir | Arka Gdynia | Free agent |
| 15.08.2025 | Y. Dilek | Istanbul Basaksehir | — | Transfer |
| 14.08.2025 | Matchoi Djaló | Istanbul Basaksehir | Wisla Plock | Loan |
| 14.08.2025 | Y. Dilek | Istanbul Basaksehir | — | Loan |
| 12.08.2025 | Matchoi Djaló | Istanbul Basaksehir | Wisla Plock | Loan |
| 08.08.2025 | E. Karaal | Istanbul Basaksehir | — | Free Transfer |
| 07.08.2025 | A. Kaygısız | Istanbul Basaksehir | — | Transfer |
| 06.08.2025 | E. M. Karaal | Istanbul Basaksehir | — | Transfer |
| 05.08.2025 | C. Sertel | Istanbul Basaksehir | — | Transfer |
| 05.08.2025 | A. Kaygısız | Istanbul Basaksehir | — | Transfer |
| 04.08.2025 | P. Keny | Istanbul Basaksehir | FC Zurich | Free agent |
| 04.08.2025 | C. Sertel | Istanbul Basaksehir | — | Transfer |
| 04.08.2025 | A. Kaygısız | Istanbul Basaksehir | — | Loan |
| 03.08.2025 | P. Keny | Istanbul Basaksehir | FC Zurich | Free agent |
| 02.08.2025 | H. Acun | Istanbul Basaksehir | — | Loan |
| 31.07.2025 | H. Acun | Istanbul Basaksehir | — | Transfer |
| 30.07.2025 | A. Fayzullaev | — | Istanbul Basaksehir | Transfer |
| 30.07.2025 | E. Koyuncu | Istanbul Basaksehir | — | Loan |