Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 04/2018 |  | Tomislav Papazov | DF |  | Levski Sofia U19 | Levski Sofia U19 |
| 03/2018 | | Petar Ivanov | GK | | Levski Sofia U19 | Levski Sofia U19 |
| 02/2018 |  | Khaly Thiam | MF |  | Dinamo Moskva | Din. Moskva |
| 01/2018 |  | Afonso Figueiredo | DF |  | Stade Rennais | Stade Rennais |
| 01/2018 | | Filipe Nascimento | MF |  | FC Dinamo Bucureşti | Dinamo Bucurest |
| 01/2018 |  | Rivaldinho | FW | | FC Dinamo Bucureşti | Dinamo Bucurest |
| 01/2018 | | Paulinho | FW |  | Zorya Lugansk | Zorya Lugansk |
| 01/2018 | | Stanislav Kostov | FW |  | Pirin Blagoevgrad | Pirin |
| 12/2017 |  | Aymen Belaïd | DF | |||
| 12/2017 | | Nikolay Krastev | GK |  | Botev Vratsa | Botev Vratsa |
| 09/2017 |  | Jerson Cabral | FW | |||
| 09/2017 | | Dimitar Sheytanov | GK | | Levski Sofia U19 | Levski Sofia U19 |
| 09/2017 |  | Hólmar Eyjólfsson | DF |  | Maccabi Haifa | M. Haifa |
| 09/2017 |  | Anthony Belmonte | MF |  | Dijon FCO | Dijon FCO |
| 08/2017 |  | Delio Rossi | MA | |||
| 07/2017 |  | Jordi Gómez | MF |  | Rayo Vallecano | Rayo |
| 07/2017 |  | Neluţ Roşu | MF |  | FC Viitorul Constanța | Viitorul Consta |
| 07/2017 | | Gabriel Obertan | FW |  | Wigan Athletic | Wigan |
| 07/2017 | | Georgi Yanev | FW |  | Spartak Pleven | Spartak Pleven |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 03/2018 | | Georgi Angelov | MF |  | Vitosha Bistritsa | Vitosha |
| 02/2018 |  | Junior Mapuku | FW |  | Cangzhou Mighty Lions | Cangzhou ML |
| 02/2018 |  | Francis Narh | FW |  | Doxa Katokopias | Doxa Katokopias |
| 01/2018 | | Dimitar Pirgov | DF |  | Botev Plovdiv | Botev Plovdiv |
| 01/2018 |  | Temitope Adeniji | FW |  | FK Atyrau | FK Atyrau |
| 01/2018 | | Aleksandar Lyubenov | GK | | Botev Vratsa | Botev Vratsa |
| 01/2018 | | Miki Orachev | DF |  | Septemvri Sofia | Septemvri Sofia |
| 01/2018 | | Aleks Borimirov | MF |  | Lokomotiv Sofia | Lokomotiv Sf |
| 09/2017 | | Amadou Soukouna | FW |  | Cherno More Varna | Cherno Mo. |
| 08/2017 | | Nikolay Krastev | GK | | Botev Vratsa | Botev Vratsa |
| 07/2017 | | Añete | FW |  | Apollon Smyrnis | Apollon |
| 07/2017 | | Deyan Ivanov | DF | | Botev Vratsa | Botev Vratsa |
| 07/2017 | | Aleksandar Aleksandrov | DF |  | Etar Veliko Tarnovo | Etar Tarnovo |
| 07/2017 | | Aleksander Aleksandrov | DF | | Cherno More Varna | Cherno Mo. |
| 07/2017 | | Srdjan Luchin | DF |  | CFR Cluj | CFR Cluj |
| 07/2017 | | Veselin Minev | DF | | Etar Veliko Tarnovo | Etar Tarnovo |
| 07/2017 |  | Mehdi Bourabia | MF |  | Konyaspor | Konyaspor |
| 07/2017 |  | Jeremy de Nooijer | MF |  | FC Sheriff | Sheriff |
| 07/2017 | | Georgi Kostadinov | MF | | Maccabi Haifa | M. Haifa |