Ousmane Dembele informed Barcelona chiefs he will play for the club in the future after he rejected a move to the La Liga champions earlier this year, reports Mundo Deportivo.
Dembele burst on to the scene at Rennes last season and subsequently attracted admiring glances from around Europe.
The 19-year-old eventually opted for Borussia Dortmund, who snapped him up for an initial fee of €8m (£7.2m), but he could have signed for Barcelona.
Barca’s sporting director Robert Fernandez offered him the chance to join the club, but he turned it down as he was aware that he would not have had regular first-team football due to the presence of Lionel Messi, Luis Suarez and Neymar.
However, Dembele is understood to have told Fernandez that he will play at Barcelona in the future at some point.