The 18-year-old Belgian-born player was on the fringes of the first-team squad last term but an impressive pre-season led new United boss David Moyes to consider him as a starter.
He scored twice in his first start at Sunderland in October but since then has largely had to bide his time until Saturday’s well-taken 36th minute goal after evading the offside trap.
“Adnan Januzaj is doing really well. We are always hard on him, we always want more but he is doing remarkably well. He can score goals, he is a real talent,” Moyes told the BBC.