Sam Wallace Writes: At the end of the tunnel at Stamford Bridge is a door adorned with the sign "Officials changing". Beyond that door is a corridor, off which are the referee's changing room, a room for doping control and another in which radio interviews are conducted.
It is through the "Officials changing" door that Chelsea chief executive Ron Gourlay walked in the aftermath of the game against Manchester United eight days ago but not, Chelsea will submit, into the referee's private room.
If Chelsea didn't report it and the media broke the story that Mikel claims he was racially abused and Chelsea din't do a thing, a backlash would have happened and Chelsea would be accused of a major cover up.