Dembele has had his Borussia Dortmund suspension extended indefinitely, the club have confirmed.
The 20-year-old France global will be suspended till after the German Cup opening round on Saturday, the German club announced on Thursday, reports Xinhua news agency.
The 20-year-old skipped training on Thursday despite the club refusing to give him permission to speak to the Spanish club, who are ramping up their efforts to sign a replacement for Neymar after his £200m transfer to Paris Saint-Germain.
In a statement to the stock market, the club said: "Borussia Dortmund has chose to uphold the training suspension for the player Ousmane Dembele until further notice".
"Ousmane Dembele, of course, has the opportunity to train individually".
The young French forward has been lined up as a replacement for Neymar by Barcelona
Dortmund rejected a €100m (£90m) offer from Barcelona for Dembele in midweek and he was fined and suspended for missing training until after Saturday's German Cup game for the defending champions against Rielasingen.
"Our complete focus lies on having a on having a good preparation for our first Bundesliga match against Wolfsburg next week", sporting director Michael Zorc said.
Dembele joined Dortmund a little over 12 months ago from Rennes on a five-year contract and scored 10 times in 49 appearances in all competitions last season.
Their CEO, Hans-Joachim Watzke, then indicated that Dortmund are not ruling out a sale, with the Bundesliga club reported to be seeking a fee of at least €130m.
Domodossola: trovati morti i due ragazzi dispersi
Sul posto sta operando il soccorso alpino, con vigili del fuoco, carabinieri ed elisoccorso del 118. Le salme sono state portate in obitorio a Domodossola.