Bonner SC U19: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2023-07-01 | Emirhan Ünal | Bonner SC U19 | Wuppertal U19 | Free |
| 2022-07-01 | Emirhan Ünal | Hennef 05 U17 | Bonner SC U19 | Free |
| 2012-07-01 | Erdoğan Yeşilyurt | Bonner SC U19 | Arm. Bielefeld | Free |
| 2011-07-01 | Lukas Kübler | Bonner SC U19 | 1.FC Köln II | Free |
| 2010-07-01 | Erdoğan Yeşilyurt | Euskirchen U17 | Bonner SC U19 | Free |