The decision will shake up a transfer market that is weighted in favor of clubs over players – it could also benefit leagues such as MLS.

An EU court ruling says FIFA's transfer rules are too restrictive. This ruling increases player power and threatens the viability of some soccer business models.

Some of FIFA's rules on player transfers go against European Union laws and free movement principles, the EU's top court said on Friday in a ruling that could open the door for players to find a new club more easily after their contract is terminated.