The 20-year-old was speaking in response to Roberto Moreno, the VP of the DIS investment group that owns a share on his rights, who say the Brazilian starlet has reached an agreement to join Barcelona in 2013.
But Neymar dismissed these outright and said the company would have no say where his future lies.
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He told reporters: “DIS may have a share on my rights, as you know, but they have no responsibilities over my life. My father is in charge of my decisions.
“Once you hear something from my mouth or his, then you may believe that I'm leaving.”
The Santos forward said that due to the amount of speculation that follows him he would appreciate if the media would first take his word about his future rather than anyone elses.
He said: “There's always rumours going on, and I'm always saying I'm going to stay. You [journalists] keep saying I'm leaving. So please, guys believe my word at least once.”
The striker has had an eventful week on the pitch as well. He scored a double in Brazil’s friendly against Japan in Poland on Tuesday night.
A day later, he netted a superb individual goal in Santos' 2-2 draw with Atletico Mineiro on Wednesday night on his 200th appearance for the club.