Arsenal chief executive Ivan Gazidis has questioned the influence of agents in transfer deals and the amount of money they are taking from the game.
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Research compiled by the European Clubs' Association (ECA) found that 14.6 percent of all money paid in transfers ended up in the pockets of agents. And Gazidis also raised concerns about a conflict of interest when an agent might be representing more than one party in a transfer deal.
Gazidis told a press conference following the ECA's general assembly: "Clearly there is a lot of money going to agents in these transfer transactions but I don't think we the clubs can abrogate responsibility -- we are part of the problem as we are the ones agreeing to pay these amounts of money.
"There are unusual pressures in the system which lead to agents having significant leverage. Players should be making more money and that money not going to agents.
"If I were a player or players' union that would be a really substantial concern to me because it means my clients as a union and me as a player are losing money.
"More invidious are conflicts of interest that often exist in these transactions with agents, and that's something that clubs and players should be concerned about."
The ECA study also found many clubs are not paying the required five percent compensation for training players between the ages of 12 and 23 -- with total payment of almost $200 million outstanding. Clubs in Africa and South America, unaware they could be due money, have missed out most.