D. Leonard
FC Schalke 04Loan—31 Aug 2026
K. Koscierski
VfL BochumLoan—11 Aug 2026- G. Ermolaev
SC Paderborn 07Loan—3 Aug 2026 - G. ErmolaevSC Paderborn 07Loan—3 Aug 2026
Ken Izekor
Bayer LeverkusenTransfer—8 Jul 2026
S. Bajić
StrasbourgFree agent—30 Jun 2026- L. Köster
Holstein KielTransfer—30 Jun 2026 
G. Jung
KayserisporFree agent—1 Feb 2026
M. RiemannSC Paderborn 07Free agent—26 Jan 2026
F. Pseftis
FC LuganoLoan—13 Jan 2026
M. TolbaVfL Bochum——8 Oct 2025- M. TolbaVfL Bochum——29 Jun 2025
J. Olschowsky
Borussia MönchengladbachLoan—9 Jan 2025
A. AourirBayer Leverkusen——20 Sept 2024
O. Aydoğan
Beşiktaş——12 Nov 2020- Sergio Baris GucciardoSC Paderborn 07Loan—18 Jul 2019
L. Yarbrough
DilaFree agent—30 Jun 2026- F. PseftisFC LuganoReturn from loan—29 Jun 2026
- J. OlschowskyBorussia MönchengladbachReturn from loan—26 Jan 2026
S. El-FaouziFC Schalke 04Transfer€200k1 Jul 2025- J. OlschowskyBorussia Mönchengladbach——1 Jul 2025
M. Johnen
Borussia DortmundFree agent—30 Jun 2025- I. HarnafiBorussia MönchengladbachLoan—1 Sept 2024
- S. Seferings
FC Iberia 1999Free—15 Sept 2021 - A. Stulin
UNA Strassen——1 Jul 2019 - N. Winter
SV ElversbergFree—1 Jul 2018 - M. Rossmann
FSV Mainz 05——1 Jul 2016 - S. Strujić
VfL Wolfsburg——1 Jul 2014 - T. Brauer
Hamburger SVFree—1 Jul 2013 - O. KefkirBorussia Dortmund——1 Jul 2013
- B. RotherBayer LeverkusenFree—1 Jul 2013
- D. EngelbrechtVfL BochumFree—1 Oct 2012
- B. Sibum
SK BeverenFree—20 Jul 2012 - Tobias FeisthammelSC Paderborn 07Free—1 Jul 2012
- B. Waterman
PSV EindhovenFree—1 Jul 2012