Reports making rounds indicate that the Spanish champions are willing to include Dembele in a deal that will bring Neymar back to the club, but his agent says those suggestions are wide off the mark.
Dembele has endured a stop-start career at Barcelona so far with injuries restricting his progress since making a €105m move from Borussia Dortmund in the summer of 2017.
Dembele has been sidelined for the next five weeks with a hamstring strain after playing in Barcelona’s opening La Liga defeat to Athletic Bilbao last Friday.
"Evolving in a club as prestigious and ambitious as FC Barcelona involves a competition that will advance and sublimate any player," Sissoko said in a widely reported statement on Tuesday.
"In any case, it is the point of view rooted in Ousmane's mind. He is Barcelona and he will remain 1,000 per cent with the firm desire to honour the colours of the club."
"I wanted to clarify firmly and definitively the situation of Ousmane Dembele. He does not plan to leave FC Barcelona for a moment," Sissoko added.
"This is the course of action fixed for several months now and no element is or will be likely to cause us to deviate. Ousmane feels perfectly well within the club and he remains in his determination to impose himself in the long term.
"Despite the solicitations of several great European clubs, Ousmane is convinced to be in the heart of the largest of them and everything is there to make it flourish.
"Ousmane is aware of what he has to do on a daily basis to make his Barcelona adventure a complete success. Unfortunately, his injury temporarily stops him in his motivation to make a great and beautiful season, symbolised by its anticipated recovery of a week.
"But this has no impact on his thirst for success and he is confident to return as soon as possible."
