Boston River: every transfer in and out, fees paid and earned, squad market value, €3.7m spent and €27m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-01 | Martín Fernández | Boston River | Gil Vicente | — |
| 2026-02-10 | Agustín Anello | Boston River | Philadelphia | €2.2m |
| 2026-01-27 | Agustín Albarracín | Boston River | Cagliari | €2m |
| 2026-01-12 | Enzo Larrosa | Boston River | Indep. Medellín | Free |
| 2025-07-11 | Martín Fernández | Boston River | Gil Vicente | Loan |
| 2025-05-16 | Emiliano Gómez | Boston River | Puebla FC | €1.6m |
| 2025-02-13 | Enzo Larrosa | Boston River | CA Cerro | Loan |
| 2025-01-01 | Leonard Costa | Boston River | Ind. Rivadavia | Free |
| 2025-01-01 | Agustín Albarracín | Wanderers | Boston River | €390k |
| 2024-08-31 | Agustín Anello | Sparta R. | Boston River | — |
| 2024-08-23 | Emiliano Gómez | Boston River | Puebla FC | Loan |
| 2024-07-30 | Francesco Fiorelli | Boston River | San Antonio FC | — |
| 2024-07-11 | Enzo Larrosa | Boston River | Mvd City Torque | Loan |
| 2024-02-01 | Juan Rodríguez | Peñarol | Boston River | Loan |
| 2024-01-31 | Guzmán Rodríguez | Boston River | Peñarol | €3.1m |
| 2024-01-19 | Bruno Damiani | Nacional | Boston River | Loan |
| 2023-07-31 | Martín Fernández | Boston River | Miramar | Loan |
| 2023-07-21 | Juan Gutiérrez | UD Almería B | Boston River | Loan |
| 2023-07-19 | Pedro Silva Torrejón | Boston River | Panetolikos | Free |
| 2023-07-09 | Mathías Acuña | Boston River | PAS Lamia | Free |