London - Something will have to give when in-form Liverpool and bitter rivals Manchester United clash in one of the Premier League's showcase fixtures at Anfield on Sunday.
Liverpool have won their last five league games and eight of their last nine and meet a United side who have won their last three league games and are undefeated in 17 of their last 19.
United produced their best performance of the season to beat Tottenham Hotspur 3-0 last Sunday and have kept a clean sheet in their last three league games, despite the endless negative analysis of their style under coach Louis van Gaal.