| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| GK | 30 | Jérémy Vachoux | 1994-07-07 | 183 | 2019-06-30 | ||
| GK | Nicolas Douchez | 1980-04-22 | 186 | 81 | 2019-06-30 | ||
| GK | 16 | Valentin Belon | 1995-07-05 | 180 | - | 2017-06-30 | |
| D | 5 | Abdoul Ba | 1994-02-08 | 200 | - | 2017-06-30 | |
| D | Akim Zedadka | 1995-05-30 | 173 | 2018-06-30 | |||
| D | 21 | Anthony Scaramozzino | 1985-04-30 | 180 | 2017-06-30 | ||
| D | 3 | Dusan Cvetinovic | 1988-12-24 | 187 | 79 | 2016-06-30 | |
| D | Mohamed Fofana | 1985-03-07 | 181 | 75 | 2018-06-30 | ||
| M | Abdellah Zoubir | 1991-12-05 | 180 | 2018-06-30 | |||
| M | Abdelrafik Gerard | 1993-06-08 | 177 | - | 2017-06-30 | ||
| M | Adama Guira | 1988-04-24 | 185 | 71 | 2019-06-30 | ||
| M | Djiman Koukou | 1990-11-14 | 185 | 2018-06-30 | |||
| M | 8 | Guirane N'Daw | 1984-04-24 | 190 | 79 | 2017-06-30 | |
| M | John Bostock | 1992-01-15 | 179 | 75 | 2018-06-30 | ||
| M | 19 | Mathias Autret | 1991-03-01 | 179 | 64 | 2017-06-30 | |
| F | Cristian López | 1989-07-24 | 185 | 2018-06-30 | |||
| F | Kévin Fortuné | 1989-08-06 | 182 | 2017-06-30 | |||
| F | 24 | Simon Banza | 1996-08-13 | 186 | 2018-06-30 | ||
| F | Teddy Chevalier | 1987-06-28 | 180 | 70 | 2018-06-30 | ||
| F | Viktor Klonaridis | 1992-07-28 | 177 | 70 | 2015 jun |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 30.Jun | Clément Chantôme (M) | RC Lens | Stade Rennais FC | Confirmed | |
| 30.Jun | Álvaro Lemos (M) | RC Lens | Celta de Vigo | Confirmed | |
| 30.Jun | Karim Hafez (D) | RC Lens | Lierse SK | Confirmed | |
| 27.Jan | Patrick Olsen (M) | RC Lens | Grasshopper-Club Zürich | Confirmed | |
| 17.Jan | Loïck Landre (D) | RC Lens | Genoa CFC | Confirmed | |
| 1.Sep | Adama Guira (M) | SønderjyskE | RC Lens | Confirmed | |
| 31.Aug | Karim Hafez (D) | Lierse SK | RC Lens | Confirmed | |
| 4.Aug | Joris Delle (GK) | RC Lens | NEC Nijmegen | Confirmed | |
| 27.Jul | Wylan Cyprien (M) | RC Lens | OGC Nice | Confirmed | |
| 19.Jul | Teddy Chevalier (F) | Rizespor | RC Lens | Confirmed |