The world football players' union FIFPro plans on Friday to file a complaint with the European Commission over football's transfer system, the head of the union said.
FIFPro President Philippe Piat, who is also the head of the French football players' union UNFP, called for an overhaul of the transfer system, and plans in particular to highlight the differing powers of clubs and players to unilaterally terminate contracts.
According to FIFPro, footballers do not enjoy the same rights as clubs to unilaterally end contracts, meaning the professional athletes do not have similar freedoms to other kinds of employees in relation to their employers.
The union said on its website that it would hold a news conference in Brussels at 10:30 am (0830 GMT) to make "a major announcement set to impact the professional football industry worldwide", but did not give further details.