Trabzonspor U21: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2019-07-01 | Serkan Asan | Trabzonspor U21 | Trabzonspor U19 | — |
| 2018-08-23 | Serkan Asan | Trabzonspor U21 | 1461 Trabzon | Loan |
| 2017-11-22 | Hüseyin Türkmen | Trabzonspor U21 | Trabzonspor | — |
| 2017-03-30 | Abdurrahim Dursun | Trabzonspor U21 | Trabzonspor | — |
| 2017-01-19 | Ensar Kemaloğlu | 1461 Trabzon | Trabzonspor U21 | Loan |
| 2017-01-09 | Serkan Asan | Trabzonspor U19 | Trabzonspor U21 | — |
| 2017-01-06 | Mehmet Yeşil | Trabzonspor U21 | Istanbul U19 | Free |
| 2016-07-01 | Mehmet Yeşil | Trabzonspor | Trabzonspor U21 | — |
| 2016-07-01 | Hüseyin Türkmen | Trabzonspor U19 | Trabzonspor U21 | — |
| 2016-07-01 | Abdurrahim Dursun | 1461 Trbzn. Yth | Trabzonspor U21 | Free |
| 2015-12-28 | Melih Kabasakal | Trabzonspor U21 | Trabzonspor | — |
| 2015-12-21 | Yusuf Yazıcı | Trabzonspor U21 | Trabzonspor | — |
| 2015-09-29 | Yavuz Aygün | Trabzonspor U21 | Trabzonspor | — |
| 2015-07-01 | Yusuf Yazıcı | Trabzonspor U19 | Trabzonspor U21 | — |
| 2015-07-01 | Mehmet Yeşil | Trabzonspor U19 | Trabzonspor U21 | Loan |
| 2014-10-03 | Uğurcan Çakır | Trabzonspor U21 | Trabzonspor | — |
| 2014-07-01 | Uğurcan Çakır | Trabzonspor U19 | Trabzonspor U21 | — |
| 2014-07-01 | Melih Kabasakal | Trabzonspor U19 | Trabzonspor U21 | — |
| 2013-09-20 | Yavuz Aygün | 1461 Trbzn. Yth | Trabzonspor U21 | Free |
| 2013-07-30 | Abdulkadir Parmak | Trabzonspor U21 | 1461 Trabzon | Free |