The Brazilian centre-half has been strongly linked with a move to Barcelona following's PSG purchase of David Luiz from Chelsea.
Marquinhos only joined PSG last summer when they paid €31milion to Roma for his signature but he has never been able to become a regular under Laurent Blanc.
The 20-year-old started just 17 league games last term and he has emerged as a target for Barcelona, who were reportedly closing in on a deal.
However, speaking to French TV show Telefoot, Marquinhos would not talk about Barcelona and said: “My future will be decided by PSG, because I am under contract here.
"I am staying so far. There is nothing official. For now I am a PSG player.”