Harrison oversaw the Beckham generation in the 1990s and believes United‚Äôs football is back to their best this season.
He told the Manchester Evening News: ‚ÄúLast year I‚Äôve got to say the build-up was so slow, painfully slow but so far this season the tempo is up 30 to 40 per cent. It‚Äôs brilliant that they‚Äôre playing quicker, United-style football.
‚ÄúIn the Community Shield City couldn‚Äôt get near us as we were playing our one-twos and keeping our discipline when they tried to bully us.
‚ÄúWe‚Äôre not as good as the ‚Äė99 team as yet but the style is similar with so many strikers competing for two positions and the speed of the build up.
‚ÄúPeople have a go at Berbatov but I think he has great control and awareness and for me he‚Äôs a top player.
‚ÄúThere is plenty of time for Fergie to get another treble but maybe not this season.
‚ÄúThe boss may be coming up to 70 but he will go on until he‚Äôs 90.
‚ÄúDaydreaming I‚Äôm thinking that with a controlling midfielder another treble is not beyond the realms of possibility.
‚ÄúI will probably get a telephone call and a ticking off from Sir Alex Ferguson for saying this but we do need a replacement for that world-class talent Paul Scholes.‚ÄĚ
Asked if he meant someone like Wesley Sneijder, Harrison replied: ‚ÄúHe‚Äôll do.‚ÄĚ