- Dimitrios Ioannidis
Fortuna SittardFree—28 Jul 2021 - Matthias Tietz
FC Differdange 03Free—11 Sept 2020 - B. Schipmann
Holstein KielFree—15 Jul 2020 - Roman Zengin
1. FC KölnFree—1 Jul 2017 - Julian Wolff
FC Schalke 04——1 Jul 2015 - Björn Kluft
Bayer LeverkusenFree—25 Jul 2010 
M. Vrančić
FSV Mainz 05Loan—1 Jul 2009- Dominick Kumbela
SC Paderborn 07Free—1 Jul 2009 - S. Kirschstein
Hamburger SVFree—1 Jul 2009 - Deniz NakiBayer LeverkusenLoan—1 Feb 2009
- A. Cvetkovic
PenybontFree agent—9 Jul 2025 - R. KlingenburgFC Schalke 04——13 Jan 2017
- J. MellwigSC Paderborn 07Free—10 Jan 2017
- C. Özkara
SivassporFree—9 Aug 2011 - Pascal SchmidtFC Schalke 04Free—1 Aug 2011
- Matthew TaylorSC Paderborn 07Free—1 Jul 2011
M. Reus
Borussia Mönchengladbach€ 1M1 Jul 2009- K. Großkreutz
Borussia DortmundFree—1 Jul 2009