His team may be in pole position in the Premier League and through to the latter stages of the FA Cup and Champions League but he believes adding those trophies to their Club World Cup and Carling Cup will prove beyond them.
Realistic: Sir Alex Ferguson admits that it may be too tough a call for Manchester United to win the Quintuple this season.
The United manager, asked if they could win all five, said: 'No. The thing about cup football is you need to be the best, but you also need a lot of luck and I think it's asking too much for all the games to go your way. It is too tough a call.'
Rafael Benitez may have signed a new deal at Anfield, but Ferguson clearly does not see him as a threat after claiming the next best managers are Arsenal's Arsene Wenger, David Moyes of Everton and Aston Villa's Martin O'Neill.
Ferguson added: 'This squad is the best I have ever had. Every game we play, I feel confident. Every attack fears our defence and every defence fears our midfield and attack.'
Despite his 67 years and the admission that a quintuple is beyond them, Fergie says the quality of his United players will stave off his retirement for a year or two.
Asked if he has a date in mind, Ferguson said: 'Not for a while. My health's good. I still have the drive and the energy. I've been here more than 22 years but I still get a buzz arriving at the training ground.
'I still get that tingle of excitement when the team bus draws up at an away ground before a big match. Or I see some of the kids coming through, like the young Brazilian twins (Rafael and Fabio Da Silva).'
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