New Entrants
Additions:

Marko Marin (Borussia Mönchengladbach, since 01/07/2009)

Marcelo Moreno Martins (Shakhtar Donetsk, since 01/07/2009, loan)

Tim Borowski (Bayern Munich, since 22/07/2009)

Claudio Pizarro (Chelsea FC, since 18/08/2009)

Said Husejinovic (1. FC Kaiserslautern, since 01/07/2009, was loaned)

Torsten Oehrl (Werder U 23, since 01/07/2009)

Timo Perthel (Werder U 23, since 01/07/2009)

Dominik Schmidt (Werder U 23, since 01/07/2009)

Marko Futacs (AS Nancy U 23, since 03/02/2009)

Onur Ayik (Werder U23, since 01/01/2010)

Sandro Wagner (MSV Duisburg, since 31/01/2010)
Departures:

Frank Baumann (end of career, since 01/07/2009)

Diego (Juventus Turin, since 01/07/2009)

Alexandros Tziolis (Panathinaikos, since 01/07/2009, was loaned)

Fabrice Begeorgi (Olympique Marseille, since 01/07/2009, was loaned)

Max Kruse (FC St. Pauli, since 01/07/2009)

Nico-Stéphàno Pellatz (Apollon Limassol, since 01/07/2009)

Kevin Schindler (FC Augsburg, since 01/07/2009, loan)

Carlos Alberto (CR Vasco da Gama, since 09/07/2009, loan)

John Jairo Mosquera (1. FC Union Berlin, since 27/07/2009, loan)

Boubacar Sanogo (AS St. Étienne, since 20/08/2009)

Martin Harnik (Fortuna Düsseldorf, since 30/08/2009, loan)

Torsten Oehrl (Fortuna Düsseldorf, since 14/01/2010, Ioan)

Marcelo Moreno Martins (Wigan Athletic, since 01/02/2010)

Jurica Vranjes (Genclerbirligi, since 31/01/2010, Ioan)

Dusko Tosic (no team, since 01/02/2010)