A former Chelsea player under Jose Mourinho is at the centre of a European Court of Justice case that could theoretically change football forever, experts say. The case hinges on whether the transfer fee system, through which one clubs pays another a sum for a contracted player’s services, contravenes European anti-competition and freedom of movement law. It has been described as “Bosman 2.0” by Jean-Louis Dupont, Jean-Marc Bosman’s lawyer in the landmark 1995 case which saw players allowed to move freely between clubs after the expiry of their contracts. According to a superb detailed analysi…