Even Jurgen's second string can't put a foot wrong.
The Reds rookies saw off a full-strength Everton in the third round - and now face League One Shrewsbury for a place in the last-16.
We asked Liverpool correspondent Paul Gorst how he thinks Sunday's showdown will go.
Win, lose or draw?
It will be a much-changed Liverpool team against Shrewsbury Town, but I'm still expecting the Reds to see off the threat of the League One outfit on Sunday. A place in the fifth round awaits. Despite the much-changed Reds line up thepools.com still make Liverpool 2/5 for victory .
Who's a good bet for 1st scorer?
Xherdan Shaqiri and Adam Lallana are fitness doubts but Takumi Minamino is likely to start in place of Roberto Firmino. The Japan international has had a quiet introduction into life at Anfield, but he could be a potent threat for the visitors on Sunday. He's a tasty 13/2 first scorer tip and is 21/10 to score at anytime in the match.
Who's on pens?
No James Milner and no Mo Salah means it will be interesting to see who steps up from 12 yards if the Reds are handed a penalty. Pedro Chirivella might fancy it, as might Alex Oxlade-Chamberlain - should he start - but I'm going to go for Curtis Jones. The young Scouser netted the decisive spot kick in the Carabao Cup against Arsenal back in October, so why not? He's 13/2 to score the last goal of the tie.
Will Liverpool keep a clean sheet?
Yes. Even with a different backline, the Reds know how to shut it out. They did so effectively against a full strength Everton, so I'm expecting the same on Sunday. A 'No' in the Both Teams To Score box is 19/20 .
Yellow card?
There is precious little evidence of anyone likely to start straying into the referee's notebook, so this is a tough one. Maybe Neco Williams on the right side of defence?
