United legend Gary Neville called for the publishing of agents' fees, along with the salaries of players.
"I don't know how you could apply that," Ferguson said.
"I don't see it doing any harm of course. It may highlight to the paying public how ridiculous it can be for some agents to make the money they do.
"But I don't think that will ever change. Once there is a transfer window people will make money.
"Agents are not going to go away. We would all like to see it but it won't happen."