Sir Alex Ferguson says Manchester United will only need to "go overboard" in the transfer market when the likes of Ryan Giggs and Paul Scholes retire.
Despite missing out on the Premier League and Champions League last season, United decided against bringing in established players and instead went for young talents such as Javier Hernandez, Chris Smalling and Bebe.
United have fallen four points behind league leaders Chelsea this season after dropping points against Fulham and Everton but, with veterans Scholes, Giggs and Gary Neville all still involved in the first team, Ferguson remains convinced the squad is able to compete at the highest level.
"We are not at the point where we have to go overboard to get the best player in the world," he said. "There are enough really top players in the club at the moment.
"There may be a time in the next couple of years where we have to stretch ourselves, particularly when Ryan, Paul and Gary retire. Then, it is a possibility we would need to get really top players in to galvanise the younger ones coming through, but at the moment we have the experience.
"We have players who have been through the whole gamut of emotions at this club and know how to deal with it."
It has been suggested on many occasions that United's owners have restricted the funds available to Ferguson, but he insists he was ready to spend if the right opportunity had arisen.
"We have no financial restrictions," he said. "If I hadn't been confident, maybe we would have done something, but there was only one player I would have brought here and that move was sealed off quite early by the club he went to.
"The best thing we can do until the market becomes more sensible is produce or buy young players and develop them in the club. By doing that, we are easily securing the next eight years at Manchester United."
Ferguson also said that, despite the late collapses against Fulham and Everton, United remain a strong defensive unit. "We don't have frailties," he said. "It has been a lack of concentration in our defending."