Boulogne B: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2022-07-01 | Hervé Touré | Boulogne B | US Boulogne | — |
| 2021-07-01 | Antoine Hainaut | Boulogne B | US Boulogne | — |
| 2020-07-01 | Antoine Hainaut | RC Lens U19 | Boulogne B | Free |
| 2020-07-01 | Anthony Oyono | Boulogne B | US Boulogne | — |
| 2019-07-01 | Anthony Oyono | Boulogne U19 | Boulogne B | — |
| 2018-07-01 | Hervé Touré | Stade Portelois | Boulogne B | Free |
| 2018-07-01 | Aurélien Scheidler | Boulogne B | US Orléans B | Free |
| 2016-07-01 | Aurélien Scheidler | Boulogne B | Amiens SC B | Loan |
| 2012-07-01 | N'Golo Kanté | Boulogne B | US Boulogne | — |
| 2010-07-01 | N'Golo Kanté | Suresnes | Boulogne B | Free |
| 2010-07-01 | Maxime Colin | Boulogne B | US Boulogne | — |