Adnan Januzaj burst onto the scene in impressive style after his brace on his first Premier League start for Manchester United.
United are certainly known for giving young players a chance to shine and others in the past have also made a major impact when debuting as a teenager.
Some of the United youngsters from the past have made an impact through vital goals and others through fine individual displays.
So, let's take a look at five of the greatest teenagers to have made an early impact for the Red Devils.
Note: All competitions taken into account but has to be from start of Premier League era.