"The diagnosis is now confirmed: the 23-year-old suffered a muscle fiber tear with tendon involvement in Munich and will therefore not be at BVB's disposal for the time being," the medical report read.This was when a team fan asked Schiele, who is a Dortmund fan, to help Schlotterbeck recover, as the Bundesliga team need their starting defender in their bid to push for the title. "The faster he returns, the better.