One of the best players for Liverpool in recent weeks has been Caoimhin Kelleher, but Lee Dixon was not particularly impressed with the goalkeeper against Erik ten Hag’s Manchester United at Old Trafford. Liverpool took on Premier League rivals Manchester United away from home at Old Trafford in the quarter-finals of the FA Cup on Sunday. Jurgen Klopp’s side lost the tie 4-3 after extra time. Amad Diallo scored the winning goal in injury time of extra time. The former Sunderland loanee found the back of the net with a low effort past Liverpool goalkeeper Caoimhin Kelleher, who has been playing…