Flamengo U20: every transfer in and out, fees paid and earned, squad market value, €1.8m spent and €2.7m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-01-01 | Iago Teodoro | Flamengo U20 | Flamengo | — |
| 2026-01-01 | Carbone | Flamengo U20 | Flamengo | — |
| 2025-09-01 | Shola Ogundana | Flamengo U20 | Dynamo Kyiv | €344k |
| 2025-07-07 | Felipe Lima | Flamengo U20 | Alverca B | — |
| 2025-02-04 | Adriel Moraes | Flamengo U20 | Santa Clara U23 | — |
| 2025-01-30 | Wallace Yan | Flamengo U20 | Flamengo | — |
| 2025-01-01 | Dyogo Alves | Flamengo U20 | Flamengo | — |
| 2024-07-18 | Shola Ogundana | Remo Stars | Flamengo U20 | €450k |
| 2024-01-01 | Petterson | Flamengo U20 | Flamengo | — |
| 2024-01-01 | Lorran | Flamengo U20 | Flamengo | — |
| 2024-01-01 | João Souza | Flamengo U17 | Flamengo U20 | — |
| 2024-01-01 | Felipe Lima | Flamengo U17 | Flamengo U20 | — |
| 2023-08-29 | Kauã Santos | Flamengo U20 | Frankfurt | €1.6m |
| 2023-07-01 | André Luiz | Flamengo U20 | Flamengo | — |
| 2023-04-26 | Shola Ogundana | Remo Stars | Flamengo U20 | Loan |
| 2023-03-21 | Bruno Caicedo | Barca SC U20 | Flamengo U20 | Loan |
| 2023-03-20 | Adriel Moraes | Flamengo U17 | Flamengo U20 | — |
| 2023-02-23 | Evertton Araújo | V. Redonda U20 | Flamengo U20 | Loan |
| 2023-01-16 | Fabrício Yan | Flamengo U20 | Al-Jazira | €800k |
| 2023-01-01 | Wesley | Flamengo U20 | Flamengo | — |