"There is no gap between the top four teams. We are happy with the signings we have made and we have a great chance but there is no complacency in terms of the challenge we will face from other clubs," said Ferguson.
"Liverpool have bought five players, Arsenal have two or three and while Chelsea have only actually bought one, they have added a few others.
"It just tells you what a great desire there is amongst us all to win the Premier League."