"Liverpool are on a fantastic run of form at the moment, having won their last seven games - but their trip to Old Trafford on Sunday is the biggest test so far," the Reds legend said in his column in the Echo this week.
"Manchester United are going for the title and they have some wonderful players, particularly in attack. But I honestly believe Liverpool can go there and win because I think they are playing well enough to beat any team in this country and the rest of Europe at the moment.
"This is no disrespect to United, who have set the standards for others to live up to for some time now and they remain the team to beat in this country.
"Getting a positive result against them will be as tough as ever, particularly with them battling for the title, but Liverpool are playing so well at the moment they should go there with confidence that they can beat them."
