RB Leipzig sporting director Rouven Schroder has aimed a dig at Fabio Carvalho after the Liverpool youngster returned to England this winter. The Portuguese youth international was recalled by the Reds after hardly featuring for the Bundesliga club this season, with Carvalho since joining Championship side Hull City on loan. The 21-year-old is regarded as one of Liverpool’s most exciting prospects and a player who could become a superstar for Jurgen Klopp’s side if his development can get back on track. Yet speaking to RB Live, sporting director Schroder was critical of Carvalho’s character du…