From all questions, of all conundrums to which Jurgen Klopp has been floating in Liverpool since four years ago, the busiest is also the most disturbing.
How do you improve on almost perfection?
After being awarded European champions and claiming in total club-record Premier League points, the last season's heights that even the most successful former Reds teams will struggle to match.
Of course, it's always room for growth, the absolute highlight for ever, but never quite achieved.
And that's why certain Liverpool supporters, while publishing them for the sake of the Madrid Champions League, began to calm down.
Transfers, or rather lack thereof, have replaced the sixth European cup as the lead point, in that the Reds are left behind when their rivals divide the cashier into pursuing the closing of & # 39; a gap, whether it is in & # 39; internal or foreign.
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Klopp has been consistent in his belief that Liverpool would not come close to replicating the expense of over £ 170m in late summer.
And talking exclusively to the ECHO during the ongoing US tour of a club, the Reds manager has tackled how the squad of the past season has made squad strengthening a tough task.
"It's not easy," Klopp says. & # 39; I told you last year that it is not easy to improve the team easily. With crazy money you can always do it – okay, you pay what you want, then it is possible.
& # 39; We're not a club like that. We can't do that. We are really rich, but we can't do what some other teams do. That's how it is.
& # 39; But we don't need it. We need to find solutions in the season. Yes, you sometimes find the solution in a transfer brand and we did. I don't need to mention the players, everyone knows.
"But otherwise you have to find the solutions at the training ground and we are doing it now."
Liverpool & # 39; still looking & # 39; to transfer
Nicolas Pepe of Lille and Nabil Fekir, now of Real Betis, are strongly associated with two players in the past few months, but with whom Liverpool has no interest.
Their only company so far has been the £ 1.3 million spent on 17-year-old Dutch defender Sepp van den Berg of PEC Zwolle.
Klopp is looking for at least one more new face, with versatile defending coverage on having priority over interested in England under-21 back Lloyd Kelly before the Bristol City man moves to Bournemouth.
But even if the purse strings remain tight, the Reds boss is convinced that he already has the team to start another attempt at Premier League and Champion League.
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"We are still searching, but it will not be the (biggest) transfer window of LFC," Klopp says. “It will just be a transfer window.
"We will see what we are doing and if we do not end up doing anything, it will be for various reasons.
"It's about using this team. In the transfer window you have to build a team that you think you want to join the season. But I already have that team.
& # 39; If we can bring someone else to make it even better, we'll see. But if not, this team is already there. And at & nbsp; we'll have to find solutions in a few moments. ”
Klopp is expanding on that point. "We started last season with five center-backs, including Nat Phillips," he adds. "Then he was one match day against Brighton when he was over for Virgil van Dijk. Fabinho next to him.
& # 39; Had one of them go out, then I wouldn't know who could do it. Who could play center-back?
& # 39; You can't be prepared for everything. You need a little luck and we did not like it in the last part of last season. We came by, won some, and let's try again. & # 39;
Klopp also highlights lights on Liverpool's transfer policy. Instead of keeping players in all positions to guarantee quality coverage, the Reds boss prevents a space in which talent permits and develops.
If a player is good enough, they will have a chance to prove it, with Trent Alexander-Arnold and Joe Gomez ultimate examples.
It cannot be, as Klopp talks, what people want to hear, but it is an approach that removes glittering silverware from the Wanda Metropolitano suggests more than works.
"Transfer strategy must be long term," he says. & # 39; It must be long term.
“Short term deals with the problem, but does not solve it. If someone gets an injury, and you buy someone to fill the position and three weeks later the injured player returns, then you have double quality in the same position.
“Having too much quality does not help players develop. It's good for everyone on the outside, to say they & # 39; well if he can't play, he can play if he could play & # 39 ;.
"If you work together for the whole week and cannot play three of the players (of the same quality in the same position), they will not heal. It's not just going to keep their trust in that kind of situation.
& # 39; You need to create a situation where & # 39; you NEVER need the player, the boys. We try that. We always have long term plans. That's what is really good with this soccer club. ”
& # 39; New Players & # 39; can affect
A contribution factor for the beating of Klopp to move this summer to & # 39; marks is his belief in & # 39; The players who are now dealing with long-term abnormalities in the past season, even if their & # 39; new players note earlier this month the Liverpool supporters shook their mind as considering themselves transfer-starved.
Head to these returnees is Alex Oxlade-Chamberlain, who is continuing to build fitness after "a year sidelined with a serious knee injury"
The midfielder, under an hour-long outing, made Borussia Dortmund on Friday and featured two days later for the first half against Seville.
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"It's up to Alex," says Klopp. & # 39; Life can sometimes be lucky and has had a very unfortunate time with the injuries.
& # 39; Two seasons ago, then & # 39; if he was injured, he was in & # 39; The form of his life, he looked so positive.
"I'm so happy with how & # 39; t it's out there at the moment, but of course we'll have to look.
But Alex Oxlade-Chamberlain … come on. Fit … if it's not a new signature, I don't know. To buy it, to the impression that we got it, we did it for us, what do we think the price would be to buy that level of player?
"Rhian Brewster, Joe Gomez, Adam Lallana, it's all clear. We have these players, now we have to use them.
& # 39; If they play, then good. If not, they have to push the others. That must be it. That's how good teams work, and that's what we believe in. ”