#5 David Beckham and Sir Alex Ferguson
David Beckham's attitude was a big hindrance to his career, according to former Manchester United manager, Sir Alex Ferguson.
There was big tension at the end of the 2002-03 season between the star man and the manager. Beckham's fame didn't help him in solving this feud.
Once the manager called Beckham from London to Manchester ahead of a Club World Cup tie in Tokyo. Then the whole team traveled together from Manchester to London, and then flew to Japan from there. This did not go down well with the England superstar.
Post defeat to Arsenal in a match, the then Manchester United manager kicked a boot at the superstar, it hit him on the face. This acted as a catalyst for his move to Real Madrid in 2003.