Borussia Dortmund manager Jurgen Klopp and Schalke’s Ralf Rangnick attend a press conference.

Borussia Dortmund manager Jurgen Klopp and Schalke's Ralf Rangnick attend a press conference.

Borussia Dortmund manager Jurgen Klopp and Schalke’s Ralf Rangnick attend a press conference. July 2011.