Van Persie, 30, has been impressed by the young winger.
"He's confident in a good way," said van Persie of Januzaj. "He's not too bothered with the whole occasion or the pressure of the games.
"When I go back 10 years when I was quite young I see similar attributes.
"I was very confident as well and I see some stuff in him and the choices he makes that I made when I was younger as well.
"He's a very big talent and he will be looked after by the staff and players here.
"He's not the new Van Persie, he's the new Adnan. Everyone is their own player."
For the big stories and the banter follow us on Twitter: @tribalfootball