After more fierce criticism of the Glazer family, who are believed to be looking at launching a £600million bond issue to bring down the massive interest they are presently paying on loans taken out to complete their controversial takeover in 2005, Ferguson has again stepped in on their behalf.
"I am not going to pay £50million for a striker who is not worth it," said Ferguson.
The United boss is adamant the only reason three-quarters of the £80million world record transfer fee received from Real Madrid following the sale of Cristiano Ronaldo has not been spent on the team is because he cannot find anyone worth buying.
Ferguson did make a £30million bid for Karim Benzema but, once that was rebuffed, he decided to leave the cash where it is.
He added: "There is debt there but it has never interrupted my plans for the team - at any stage.
"Concerns of the supporters are down to the fact that I haven't moved in the transfer market. But that is nothing to do with the Glazers or with (chief executive) David Gill."