Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 09.09.2025 | G. Sazdagi | Kayserispor | Besiktas | Transfer |
| 08.09.2025 | G. Sazdagi | Kayserispor | Besiktas | Transfer |
| 08.09.2025 | C. Ünder | Fenerbahce | Besiktas | Loan |
| 07.09.2025 | C. Ünder | Fenerbahce | Besiktas | Loan |
| 07.09.2025 | T. Sanuç | Besiktas | Gazişehir Gaziantep | Loan |
| 06.09.2025 | T. Sanuç | Besiktas | Gazişehir Gaziantep | Loan |
| 06.09.2025 | E. Muçi | Besiktas | Trabzonspor | Loan |
| 05.09.2025 | E. Muçi | Besiktas | Trabzonspor | Loan |
| 02.09.2025 | K. Arroyo | Besiktas | — | Transfer |
| 02.09.2025 | V. Černý | VfL Wolfsburg | Besiktas | Transfer |
| 01.09.2025 | A. Hadžiahmetović | Besiktas | — | Loan |
| 01.09.2025 | J. Onana | Besiktas | Genoa | Loan |
| 01.09.2025 | V. Černý | VfL Wolfsburg | Besiktas | Transfer |
| 31.08.2025 | A. Hadžiahmetović | Besiktas | — | Loan |
| 31.08.2025 | V. Černý | VfL Wolfsburg | Besiktas | Transfer |
| 29.08.2025 | Al Musrati | Besiktas | Hellas Verona | Loan |
| 27.08.2025 | Tiago Djaló | Juventus | Besiktas | Transfer |
| 26.08.2025 | A. Oxlade-Chamberlain | Besiktas | — | Free agent |
| 26.08.2025 | E. Touré | Atalanta | Besiktas | Loan |
| 24.08.2025 | E. Terzi | Besiktas | — | Loan |
| 23.08.2025 | R. Yılmaz | Rangers | Besiktas | Transfer |
| 22.08.2025 | T. Bingöl | Besiktas | Kocaelispor | Free Transfer |
| 21.08.2025 | T. Bingöl | Besiktas | Kocaelispor | - |
| 19.08.2025 | P. Gelen | Besiktas | — | Loan |
| 18.08.2025 | É. Ricardo | Besiktas | — | Loan |
| 16.08.2025 | Taylan Bulut | FC Schalke 04 | Besiktas | Transfer |
| 14.08.2025 | Fahri Kerem Ay | Besiktas | — | Loan |
| 14.08.2025 | Taylan Bulut | FC Schalke 04 | Besiktas | Transfer |
| 13.08.2025 | Fahri Kerem Ay | Besiktas | — | Loan |
| 13.08.2025 | C. Keles | Besiktas | Kocaelispor | Loan |
| 12.08.2025 | C. Keles | Besiktas | Kocaelispor | Loan |
| 10.08.2025 | A. Masuaku | Besiktas | Sunderland | Free Transfer |
| 09.08.2025 | A. Masuaku | Besiktas | Sunderland | Free agent |
| 08.08.2025 | W. Ndidi | Leicester | Besiktas | Transfer |
| 08.08.2025 | Yakup Arda Kılıç | Besiktas | — | Loan |
| 07.08.2025 | Yakup Arda Kılıç | Besiktas | — | Loan |
| 06.08.2025 | W. Ndidi | Leicester | Besiktas | Transfer |
| 03.08.2025 | S. Kılıçsoy | Besiktas | Cagliari | Loan |
| 31.07.2025 | Gedson Fernandes | Besiktas | — | Transfer |
| 31.07.2025 | A. Demir | Besiktas | — | Transfer |
| 30.07.2025 | K. Kesgin | Besiktas | — | Transfer |
| 30.07.2025 | Gedson Fernandes | Besiktas | — | Transfer |
| 29.07.2025 | K. Kesgin | Besiktas | — | Transfer |
| 28.07.2025 | B. Zaynutdinov | Besiktas | — | Transfer |
| 27.07.2025 | B. Zaynutdinov | Besiktas | — | Transfer |
| 23.07.2025 | G. Baytekin | Besiktas | — | Loan |
| 13.07.2025 | O. Kökçü | Benfica | Besiktas | Loan |
| 10.07.2025 | O. Kökçü | Benfica | Besiktas | Loan |
| 10.07.2025 | C. Immobile | Besiktas | Bologna | Free Transfer |
| 03.07.2025 | T. Abraham | AS Roma | Besiktas | Loan |