Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2018 |  | Thomas Dähne | GK |  | HJK Helsinki | HJK |
| 01/2018 |  | Dawid Kieplin | DF |  | Pogoń Siedlce | Pogoń Siedlce |
| 01/2018 | | Oskar Zawada | FW |  | Karlsruher SC | Karlsruhe |
| 09/2017 | | Alan Uryga | DF | |||
| 09/2017 |  | Semir Štilić | MF | |||
| 08/2017 | | Damian Szymański | MF |  | Jagiellonia Białystok | Jagiellonia |
| 08/2017 | | Konrad Michalak | MF |  | Legia Warszawa | Legia |
| 07/2017 | | Jerzy Brzęczek | MA | |||
| 07/2017 | | Leszek Dyja | AT-C |  | GKS Katowice | GKS Katowice |
| 07/2017 | | Bartłomiej Gradecki | GK |  | Wisła Płock II | Wisła Płock II |
| 07/2017 | | Adam Dźwigała | DF |  | Górnik Łęczna | Górnik Łęczna |
| 07/2017 | | Igor Łasicki | DF |  | AC Carpi | Carpi |
| 07/2017 |  | Paul Pîrvulescu | DF |  | SKN St. Pölten | SKN St. Pölten |
| 07/2017 | | Dawid Jabłoński | MF |  | Świt Nowy Dwór | Nowy Dwor |
| 07/2017 | | Jakub Łukowski | MF |  | Olimpia Grudziądz | Olimpia Grudziądz |
| 07/2017 | | Damian Rasak | MF |  | Miedź Legnica | Miedź Legnica |
| 07/2017 | | Patryk Szczepański | MF | | Świt Nowy Dwór | Nowy Dwor |
| 07/2017 |  | Nico Varela | MF |  | AE Lárissa | AE Lárissa |
| 07/2017 | | Grzegorz Wawrzyński | MF | |||
| 07/2017 | | Kamil Biliński | FW |  | Śląsk Wrocław | Wrocław |
| 07/2017 | | Mikołaj Lebedyński | FW | | GKS Katowice | GKS Katowice |
