Monaco U21: every transfer in and out, fees paid and earned, squad market value, €3m spent and €12m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-09-01 | Mayssam Benama | Monaco U21 | FC Annecy | — |
| 2025-08-28 | Malamine Efekele | Monaco U21 | FC St. Gallen | — |
| 2025-07-01 | Valy Konaté | Monaco U21 | Cercle Brugge | Loan |
| 2025-07-01 | Saïmon Bouabré | Monaco U21 | Monaco | — |
| 2025-07-01 | Samuel Nibombe | Monaco U19 | Monaco U21 | — |
| 2025-07-01 | Mamadou Coulibaly | Monaco U21 | Monaco | — |
| 2025-07-01 | Lucas Michal | Monaco U21 | Monaco | — |
| 2025-07-01 | Joan Tincres | Monaco U19 | Monaco U21 | — |
| 2025-07-01 | Amal Boura | Monaco U19 | Monaco U21 | — |
| 2025-01-15 | Valy Konaté | RC Abidjan Res. | Monaco U21 | — |
| 2024-07-01 | Bradel Kiwa | Strasbourg U19 | Monaco U21 | — |
| 2024-02-01 | Antonin Cartillier | Monaco U21 | Stade Brestois | Loan |
| 2024-01-24 | Malamine Efekele | Monaco U21 | Cercle Brugge | Loan |
| 2023-09-06 | Romaric Etonde | Monaco U21 | Cercle Brugge | Loan |
| 2023-07-01 | Yllan Okou | Monaco U21 | Monaco | — |
| 2023-07-01 | Yann Lienard | Monaco U21 | Monaco | — |
| 2023-07-01 | Saïmon Bouabré | Monaco U19 | Monaco U21 | — |
| 2023-07-01 | Romaric Etonde | Paris SG U19 | Monaco U21 | Free |
| 2023-07-01 | Ritchy Valme | Monaco U19 | Monaco U21 | — |
| 2023-07-01 | Jordan Semedo | Monaco U21 | Cercle Brugge | Loan |