<p>When Manchester United re-signed their former youth player Paul Pogba for a world record fee in the summer of 2016, they made a powerful statement.<br><br>Together with the signing of Zlatan Ibrahimović. <br><br>It signalled their determination to attract the best players in the world to Old Trafford, despite three seasons of underachievement. <br><br>In the four years since he had left the Reds, Pogba had blossomed into a midfielder of ...