15-year-old wants his registration to be cancelled He was to be in squad to face Brighton on Wednesday Manchester United have been left confused and shocked by the news that the talented 15-year-old player JJ Gabriel has asked to leave the club, a day before he was to be included in the first-team squad to face Brighton. Gabriel could have become United’s youngest player in the Carabao Cup third-round tie at Old Trafford on Wednesday. But the Guardian understands he has asked for his registrati…