Ruben Amorim has been slammed for demoting Kobbie Mainoo who has since flourished under Michael Carrick . The Manchester United star has played a key part in the club's renaissance under the former Red Devils midfielder who has led the side to four wins in his first five games in charge. Since the interim appointment of Carrick , 44, last month following Amorim's sacking , the ex-England ace has returned Mainoo to the starting line-up, with the star having previous played just 228 minutes of