Manchester United winger Adnan Januzaj made a surprise appearance for the U19s in the Nike Academy Cup last weekend.
The Belgium international helped United to victory over AS Monaco.
Januzaj, 20, was not named in Marc Wilmots' Belgium squad for their Euro 2016 qualifiers and instead helped United's youngsters to victory at St George's Park.
The Belgian, who earlier this month featured for United's Under-21s, completed 90 minutes in a line-up that featured Andreas Pereira, Sadiq El-Fitouri, Tom Thorpe and Tyler Blackett.