Liverpool can beat Manchester United without Nunez because if we compare two clubs, Manchester United are in troubles, not Liverpool. Liverpool did not win in first two matches so they have their issues too but not too bad like United.
The reality is that both Manchester United and Liverpool are in big big troubles lol; one cannot play out from the back, while one cannot defend their lead; this has made sure that neither of the team has won a game n the premier league this season; Manchester United lost 2, Liverpool drew 2 games in similar version.
In my own opinion, Manchester United have higher chances of winning this tie against Liverpool; either ways, one team will break their winless run