However, he expects cash-rich neighbours Manchester City to be busy.
"There definitely won't be anyone coming here but I'm pretty sure City will do some business," Ferguson told the club's official magazine Inside United.
"You don't talk about having all this money and then not use it. They'll have plenty of ideas - the fact that they tried to buy four or five players in an hour on deadline day gives you an indication of what they want to do.
"But at the end of the day you can't buy them all."