The 19-year-old was rumoured to be concerned that his chances would be limited due to the number of summer signings made by Louis van Gaal, but he insists that he is happy to still be at Old Trafford.
"I saw some reports saying I was unhappy," Januzaj told Squawka. "That couldn't be further from the truth.
"I love this club and I'm excited to play for this manager. The fans have been so good to me and I want to repay them."
When asked where he would prefer to be used this season, the Belgium international replied: "Number 10 of course. That's my preferred position, but I'm happy to play anywhere for the manager."
Manchester United continue their search for a first victory under Van Gaal when they meet Queens Park Rangers on Sunday afternoon.