By Sean Walsh Liverpool’s bid to win a quadruple continues with a trip to rivals Manchester United in the FA Cup on Sunday. The Reds can book a return to Wembley for the semi-finals with victory in this weekend’s sixth-round matchup. United kickstarted the Erik ten Hag era in Liverpool’s last visit to Old Trafford all the way back in August 2022, while they were chief disruptors in a 0-0 draw at Anfield in December 2023. So how do Liverpool overcome United this time around? Don’t lose your headsThe 37 shots Liverpool took in December’s 0-0 draw with United was the highest tally registered with…