Dembele has been linked with a move to Premier League clubs, Liverpool and Arsenal in recent weeks.
The France international has struggled to adapt to Barcelona manager, Ernesto Valverde’s style since joining the Camp Nou club from Bundesliga side, Borussia Dortmund in 2017.
The 21-year-old has regularly turned up late for training and has been dropped from the match-day squad on several occasions by Barca manager, Ernesto Valverde.
According to Spanish newspaper, Sport, the Catalan club have issued Dembele with an ultimatum, telling him to improve his attitude, but the club’s hierarchy are not convinced that the winger will change.
The report claimed that should Dembele fail to improve, the Camp Nou club are open to selling him at the end of the season but will demand a €100million (£88.7million) transfer fee.
Dembele will hope to feature for Barcelona when they tackle Atletico Madrid in the La Liga fixture this weekend.