David James believes all the money in the world will not help Manchester City overthrow arch-rivals Manchester United.
City stand on the verge of a takeover from the Abu Dhabi United Group which will see them become the richest club in football.
They smashed the British transfer record to sign Brazilian ace Robinho from Real Madrid on deadline day, and other big name arrivals have been touted.
However, former City keeper James believes the Red Devils will always rule the roost in Manchester despite the significant financial clout now possessed by their neighbours.
"It is good for football because it is another club to attract people's interest and it is good that people with serious money want to invest in the Premier League," said the Portsmouth and England shot-stopper.
"You can bid for all the best players in the world but if you do not use them properly you are not going to win anything.
"Jack Walker proved you can buy success (at Blackburn) but maintaining it is difficult. Alex Ferguson has proved he can do that.
"Manchester United have set the benchmark and they are annoyingly good at it. They have history going back to winning the European Cup in 1968.
"They have a worldwide fan base built up over many years and for City to match that will be very difficult."