Who is J.J. Gabriel? Meet Man United prodigy tipped for breakout season under Michael Carrick originally appeared on The Sporting News. J.J. Gabriel, whose full name is Joseph Junior Andreou Gabriel, is a forward who is part of Man United's youth academy. AdvertisementAdvertisement AdvertisementCan J.J. Gabriel play in the Premier League? Gabriel scored a further six goals to help United to the FA Youth Cup final, where they lost to Manchester City.