‘Football managers and coaches are not infrequently subjected to disciplinary sanctions by football regulatory bodies for speaking out about referees and such like. It is comparatively rarer for players to be sanctioned for expressing themselves, although this has now happened twice to QPR and sometime England midfielder and avid tweeter Rio Ferdinand.’
Sports Law Bulletin from Blackstone Chambers, 10th November 2014
Source: www.sportslawbulletin.org