Liverpool played 120 minutes against Stoke City on Tuesday and still needed penalties to qualify for the League Cup final.
I don’t want a replay - I would like to win without a second game!
It will be another young side. It will be a different team for sure. Some players covered 17km in that last game.
We have to make a few changes, we will make them, but only because we want to win the game.
The last FA Cup game v Exeter was great. The boys will give everything.
The German manager also said he is happy with his current squad but did not discount the possibility of Liverpool doing some business in the remaining days of the transfer window, per the Liverpool Echo's James Pearce: "I am fine with this squad. No problem. Only problem has been injuries. We are always busy and checking possibilities. If something happens we will see. There's nothing to say [on transfers]."
Liverpool required a replay to get past Exeter and face a much tougher challenge against the Hammers at Anfield—West Ham have won both the league fixtures between the sides this season.
Slaven Bilic is likely to field a strong side on Saturday, as West Ham have not played since last weekend and will surely have genuine designs on winning the FA Cup this season given their impressive form.
Klopp is thus asking a lot of his younger players to put Liverpool through to the next round, and there are a number of injury concerns for the former Borussia Dortmund boss.
Daniel Sturridge is still unavailable, per the Times's Tony Barrett:
Tony Barrett @TonyBarrett
Jurgen Klopp on Sturridge: "There's no news really. He's still working; sometimes it's good, sometimes it's bad."2016-1-29 13:57:35
Pearce passed on Klopp's additional updates:
James Pearce @JamesPearceEcho
Klopp: "Lovren is back, Caulker is available. Coutinho is close to returning to fitness, still doing rehab. Clyne is possible. Much better."2016-1-29 14:11:51
Those returning to action will be a big boost for Klopp, and he could well field both Steven Caulker and Dejan Lovren in defence, as Mamadou Sakho and Kolo Toure both started against the Potters.
Liverpool will need to keep things tight at the back if they are to progress to the fifth round, as West Ham have an abundance of attacking talent in the likes of Dimitri Payet and Enner Valencia.
It is set to be another tough match for Liverpool at Anfield as they look to advance in the FA Cup, but the home crowd will undoubtedly be a huge help and could give the Reds the edge.