John Barnes has told England to "leave Rio Ngumoha alone" as he called on the Liverpool teen to be allowed to develop away from the limelight. The teenage sensation was a rare bright spark for the Reds in an otherwise underwhelming campaign. He was one of several young stars who were called up to Thomas Tuchel 's World Cup squad for their warm-up matches, bulking out the 26-man squad. Ngumoha made his debut off the bench in England's less than convincing win over New Zealand at the weekend,