The German club revealed that the winger did not attend the scheduled session
He could be trying to pressure the team into allowing him to sign for Barcelona
Borussia Dortmund revealed on Thursday that they do not know why Ousmane Dembele did not turn up at training and they don't know where he is.
"Quite honestly, I have no idea why he wasn't there." Peter Bosz, the team’s coach said. "We tried to reach him, it hasn't worked. I hope that nothing bad has happened."