Former Manchester United defender Viv Anderson believes Ferdinand was wrong to against Ferguson.
Anderson, who became England's first black international when he played against Czechoslovakia in 1978, does not feel the United boss should have been put in such a position.
"I don't agree with Rio," Anderson told MUTV.
"You can see the manager was fuming and clearly he didn't know anything about it.
"He expects his senior boys to set an example. He is the manager. If he says we are all doing it together, it should be the end of the story.
"But Rio has gone the other way.
"I don't see where he is coming from and I don't know what it is going to achieve."
The row comes at the end of the week which has seen the ugly issue of racist abuse again come to the fore following the scenes at the England Under-21 match in Serbia.
Rio Ferdinand is facing a fine of up to £220,000 after refusing to support the anti racism charity Kick it Out. Before their 4-2 win over Stoke yeaterday boss Sir Alex Ferguson insisted all his players would wear shirts made by the charity as part of a national campaign.
Rio and several other players boycotted it - claiming not enough is being done to stamp racism out of the game. Sarah Rogers has more: