The 19-year-old has struggled to secure a regular place in Louis van Gaal’s side and has made just 13 appearances in all competitions this season.
Earlier this month, United told Januzaj he must wait until the end of the winter transfer window before his future is clarified, while the midfielder’s representative, Dirk de Vriese, admits the French champions have already signalled their interest.
"Yes, PSG have shown themselves to be interested this winter," De Vriese told Foot Mercato. "They directly contacted Manchester United for information.
"Louis van Gaal announced that Adnan cannot leave this winter, either permanently or on loan. The coach considers him an important player for squad. He is counting on everyone.
"It seems like a final decision, I don’t think that it will change."
Januzaj is contracted to the Old Trafford club until June 2018.
