Jurgen Klopp faces a career-defining decision over his fabled Liverpool front line as Liverpool face Manchester United for the second time in eight days.
Last weekend's stalemate against United at Anfield - and Thursday's shock defeat to Burnley - underlined a big problem for the Reds as Klopp looks to mastermind his side's title defence.
Liverpool have now gone four Premier League games without scoring, and are without a win in five top-flight matches - with Sadio Mane the only Reds player to have scored in the league during that dismal run.
Mane, Mohamed Salah and Roberto Firmino have torn defences apart in recent seasons with their quick movement, devastating finishing and intricate understanding of each other's play.
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