Premiership clubs have reacted to the Carlos Tevez row by seeking to clear up confusion over third party influence in the purchase of players.
The third-party agreements were with Iranian-born businessman Kia Joorabchian and the Hammers were ordered to end the agreement by the commission.
A Premier League statement on Friday's AGM said: "It was decided, for the sake of clarity, to adopt a rule making the disclosure of all documents relating to the transfer of a player's registration and any other relevant third party contracts or arrangements explicit."