Soccer's world governing body FIFA and the international players' union FIFPro have finally reached agreement over transfer regulations after months of argument.
A statement issued by FIFA today said FIFPro would now cease the legal challenges it had initiated against the new rules, which come into operation on Saturday.
FIFA president Sepp Blatter hailed the agreement as a "milestone for football".
One of the results of the negotiations is that representatives of FIFPro will sit on FIFA's new Dispute Resolution Chamber, together with representatives of clubs, to ensure the new rules are applied fairly.
The overhaul of the transfer system came after months of negotiations between FIFA, UEFA and the European Union (EU).
The EU said soccer's current transfer rules broke European employment laws and warned it would impose its own rules if the sport's governing bodies refused to change.
They reached agreement in March, with key elements being that players had to honour their contracts within the first two years of a three year "protected" period or face a four month ban; compensation for clubs training young players; one main transfer window per season; and compensation to be paid if a contract is breached.
FIFPro refused to support the deal until this week but its approval now means all the interested parties are on board.