Through silent, empty stadiums, violence against rival teams, racist slurs, and repeatedly mocking chants, Chelsea fans have too often disgraced football.
With Bradford City into the last eight of the league, lets have a look at the teams which are already present there or are about to make their way into it.
One man was the driving force behind this, one man who has handled some of the most lucrative deals in football history-Portuguese super-agent Jorge Mendes.
