The defender-turned-pundit has been impressed with the noise levels for relatively smaller games and believes the Premier League leaders will be in for a big challenge
The former defender was impressed by the noise levels when his beloved Liverpool faced Bolton at home in August, and feels things can only get better in a big match such as this weekend’s.
“Another potentially important factor is the Anfield atmosphere on Saturday,” Hansen wrote in LFC Magazine.
“I was at the Bolton game at Anfield in August and while, with all due respect to them, Bolton will never be the biggest game of the season, the atmosphere was electric.
“I don't think Manchester United's players will be frightened by the noise levels on Saturday, but Liverpool's players could be inspired by it.
“If you're playing in that sort of atmosphere and you know the crowd are right behind you it definitely gives you an edge.
“On Saturday, Kenny would love the crowd to be in full voice and for Anfield to be bouncing because when it is, there is simply nowhere better.”
The ex-Scotland international, now a pundit, made 434 league appearances for the Reds between 1977 and 1991.