The South Korean has been unavailable for the Tottenham since their opening match of the season at Newcastle due to his participation in the Asian Games.
14 players fall into that age bracket, and remarkably the superstar front three of Mohamed Salah, Sadio Mane and Roberto Firmino are all the same age - 26. And, Klopp admitted in his pre-match press conference that he will have to bank on his entire squad over the next month, in what should be a taxing period for the Reds.
Meanwhile, Liverpool will be looking to extend their lead at the top of the league when they face Tottenham Hotspur at Wembley on Saturday. That's too complicated; you have to go into the next game and see who you can choose.
"Come on. If, against Liverpool at Wembley, you do not have the desire and the focus to play, it is not about playing well, it is about attitude and to say, "Hey, come on, we are aggressive and we try to win".
The former right-back suggested that if the German wants to win the league, he should forget all about the Champions League.
"I know the situation is not like people expected".
He said: "If Saturday we play in the same way - I don't say performance, because the performance was not bad against Watford - but if we do it the same way, rather than take off players, I will be on the phone to say, 'Houston, we have a problem!'"
Follow the game with us below. I don't understand, we play our kids or what?
He said: "It was a massive wake-up call for us to show more respect to the competition and to realise that in come circumstances you can beat Manchester United, different teams and opponents. Mauricio [Pochettino] has the same issues, we all have to work with what we've got".
"Two seasons ago we had a fantastic record [in big-six matches] and previous year we didn't have such a good record, especially away from home".
"I noticed City pulled a couple of players out".
"But on the other side we still knew we had a good team".
The Reds have picked an impressive 43 points from 28 games against Spurs, Manchester United, Man City, Chelsea and Arsenal.