Manchester United midfielder Paul Pogba asked to leave the club before the start of the 2018/19 season after his agent had reached an agreement with reigning La Liga champions Barcelona, according to reports. The World Cup winner has been at loggerheads with manager José Mourinho for some time, and the pair had their most high-profile altercation on Wednesday. Pogba clashed once again with his head coach but this time it was all caught on video. Mourinho can even be heard telling his star...