Having failed to earn a start under Louis van Gaal's management this season, reports had suggested that the Belgium international could leave the club either in January or next summer.
However, Dirk de Vriese has claimed that the 19-year-old has no intention of departing Old Trafford.
"We want to stay. Adnan wants to gain experience in England as a number 10. He doesn't fear the competition. Just like anyone else he wants to play but he will wait for his opportunity. He is a super professional and he is still motivated, even when he has to play for the Under-21s," he said.
"We're not angry. We know the club is very happy with him and they want to keep Adnan for the rest of his career at Old Trafford."
Januzaj joined the Red Devils as a trainee from Anderlecht in 2011.