"I thought there would be more spending," said Ferguson, sitting alongside Owen Hargreaves, his £17m investment from Bayern Munich and Nani, who cost a combined £30m when joining from Sporting Lisbon along with Porto's Anderson. That was without his intended investment in Carlos Tevez, with Ferguson saying United were on the brink of completing a deal for the Argentinian striker.
"In the 90s we rotated our squad very well," he added. "Last season we were involved in the three tournaments - the final of the FA Cup, the semi-final of the European Cup as well as the league.
"We had a great opportunity [to win the treble] but we just didn't have enough bodies to stretch our squad out and save legs where we could have saved legs. In that situation I sort of regretted allowing the young players to stay out on loan.
"If I had been selfish and kept them we would have had a far better chance of getting to the final of the European Cup and a good chance of winning the FA Cup." He insisted, though, that none of his players could be guaranteed a place.
"No one will play all the games next year and hopefully they accept that and move on to the business of trying to achieve success for us."