Januzaj made his United debut in August and has since become the breakout star of the 2013/14 season with three goals and 29 appearances to his name. As a result, the Belgian-born youngster has also become a firm fans' favourite at Old Trafford.
Despite such a blistering start to his Reds career, Adnan has featured in just two matches in March and was notably not involved in Tuesday's 3-0 home defeat to Manchester City. However, as Moyes explains, there are valid reasons behind his absences.
"I think Adnan has played an incredible amount of games for an 19-year-old," the boss told reporters at the Aon Training Complex on Friday. "We have to be mindful of that. We have seen signs in training that we have to be careful what we do with him.
"He is a great talent and he is someone we know will go a long way at Manchester United. But we are just being careful with him. We have to do the right things and he has played a lot of football."