Sir Alex Ferguson feels Manchester United will have to contend with Manchester City paying "stupid money and silly salaries" this summer.
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City ended a 44-year wait for league glory when taking the Premier League crown on the final day of the season. Ferguson feels City will look to back up their success by adding yet more quality to their ranks. Vast resources are available at Eastlands, but it is not something Ferguson will run away from.
"We know City are going to spend fortunes, pay stupid money and silly salaries. We know that happens. We can't do anything about that," Ferguson told MUTV.
"We are not like other clubs who can spend fortunes on proven goods. We invest in players who will be with the club for a long time, who will create the character of the club and the excitement for our fans. We are good at that and we are going to continue that way."
United have been linked with Borussia Dortmund duo Shinji Kagawa and Robert Lewandowski and Lille winger Eden Hazard, but Ferguson does not believe he has to overhaul his squad.
"We have set out our stall for certain players and we want to make sure the evolution continues at United," he said. "I have been at the club for 25 years and I have to maintain a certain standard that keeps us there all the time.
"We don't always win it because we are always there, which is great credit to how we view things. But there is nothing materially wrong with us. I know there are some critics but we got 89 points."