Manchester United boss Sir Alex Ferguson believes the spending power of clubs like Manchester City has made the transfer market "insane".
Backed by their wealthy owners, City have spent a fortune on players including Sergio Aguero, David Silva and Carlos Tevez in recent seasons.
"Nobody can match their financial power, no one," Ferguson said in The Sunday Telegraph. "You have to accept that so we do it a different way. We have to look at younger players. It's been insane for a while, for a long time, and I think clubs like City create that."
He added: "We need to reassess the way we're going with that in terms of players."
Ferguson confirmed he would be looking to strengthen his squad in the summer.