BAD RAGAZ, SWITZERLAND - JULY 27: Head coach Peter Bosz of Borussia Dortmund in action during a training session as part of the training camp on July 27, 2017 in Bad Ragaz, Switzerland. (Photo by Alexandre Simoes/Borussia Dortmund via Getty Images)
BAD RAGAZ, SWITZERLAND - JULY 27: Head coach Peter Bosz of Borussia Dortmund in action during a training session as part of the training camp on July 27, 2017 in Bad Ragaz, Switzerland. (Photo by Alexandre Simoes/Borussia Dortmund via Getty Images)