One of Sir Alex Ferguson's final acts as United manager was to hand Januzaj a squad number at the back end of last season.
Although the 18-year-old Belgian did not end up making his Red Devils debut, he did make the bench for that epic 5-5 draw at West Brom in Ferguson's last game in charge.
Having taken guidance from reserve team chief Warren Joyce, new boss David Moyes opted to take Januzaj on United's pre-season tour to the Far East and Australia.
And the winger has made a positive impression too, particularly in the opening game in Bangkok where he was the Red Devils' best player.
However, with some of his senior men returning to action and the prospect of new signings arriving prior to the transfer deadline, if Moyes follows Ferguson's example he might well be looking to place Januzaj at a higher-ranking Championship club to prevent his progress from stalling.
The former Anderlecht player is yet to speak with Moyes about the situation.
But he does know what his preference is.
"My target for the season is to try and get some games for the first team," he said.
"I have not spoken to the manager about it yet but I would prefer to do that rather than go out on loan.
"That is what I came here for. Everyone wants to play for Manchester United."
Januzaj is the latest in a growing list of exciting Belgian players to emerge in the last few years.
Although next summer's World Cup Finals might come too early for him, it would appear to be where Belgium are heading after a 12-year absence.
Not that Januzaj has any rational explanation for the emergence of such talent.
"I don't know why so many Belgian players are doing well," he said.
"It is just a generation that has come through.
"The national team is certainly doing very well at the moment.
"They have got quite a lot of good players so I think they will be a big team in the future."
On the early evidence, Januzaj certainly has a promising future.
And the added advantage of being at United is that he can seek guidance from the very best.
"For the first few months when I came here it was very hard," he said.
"But gradually my English started to improve. I could speak to other people and connect with them.
"Now I feel confident and happy to be with the players, and in particular Ryan Giggs.
"Every time I need to ask something I go to Giggs. He helps me quite a lot."