French winger has been the subject of a transfer bid from the Primera Liga club and has since not showed for training.
Ousmane Dembele to 'remain suspended' by Dortmund amid interest from Barcelona
Ousmane Dembele has had his suspension extended by Borussia Dortmund until further notice as he continues to be unsettled by interest from Barcelona.
The 20-year-old French winger skipped training on Thursday and was swiftly suspended by the Bundesliga club for the weekend's German Cup first-round encounter with Rielasingen-Arlen.
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Dembele is under contract with Dortmund until 2021 and an initial offer from Barcelona, reportedly worth €100m has been rejected by Dortmund.
Dortmund have now made the decision not to lift the suspension on Dembele.
"Our focus now is on a concentrated preparation of the team for the Bundesliga opening match against Wolfsburg in the coming weekend," sporting director Michael Zorc told Dortmund's website.
"Ousmane Dembele has the possibility to do individual training off the group."
Dembele joined Dortmund a little over 12 months ago from Rennes on a five-year contract and has attracted top European suitors after a breakout season at the Westfalenstadion.
He scored 10 times in 49 appearances in all competitions in the last campaign while he broke his duck for France with the winner in the 3-2 friendly triumph over England in June.