The France international joined Barcelona from Borussia Dortmund in last summer's transfer window, with the attacker reportedly becoming the world's second-most expensive footballer behind Neymar.
The 20-year-old has struggled to make an impact in Spain, however, with a hamstring injury forcing him to miss a lot of football in the early stages of his Camp Nou career.
There have been suggestions that Dembele could look to leave Barcelona this summer after failing to settle, but the attacker has firmly rejected those reports.
"I'm not going to leave after just one season," Dembele told Telefoot. "I signed a five-year contract with Barcelona. I'll be here for a long time."
Dembele has managed one goal and seven assists in 17 appearances for Barcelona since his arrival from German football.