After Paul Pogba's £89m move to Manchester United in 2016, Klopp said he would quit football if such fees became commonplace.
However, the 25-year-old was left at home as the rest of his squad travelled to the States, where they will face Borussia Dortmund, Manchester City and Manchester United in the International Champions Cup.
Keita is one of many marquee players to head over to the red half of Merseyside this summer, as Jurgen Klopp plots a course to finally win silverware for the club. I couldn't have imagined since then that the world would change like it has.
"£100m was a insane number but since then the world changed".
"The world has changed completely".
"First and foremost my responsibility is to make this club as successful as possible".
"It's not about pushing through my thoughts on that and not paying big money - if Liverpool aren't successful we have to work".
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'We signed the most expensive goalkeeper [Alisson], bam bam, there will be a few nice transfers [by other clubs].
"My job is together with [sporting director] Michael Edwards and [co-owner] Mike Gordon to bring the best players who are available for Liverpool - if they fit in".
Although his own transfer business is done, Klopp thinks there will be more big deals before the transfer window closes, on 9 August in England, and 31 August across the rest of Europe.
It was confirmed last month that Ings is looking for a way out of Liverpool in search of some consistent first team minutes and his recent omission from the pre-season squad indicates that Liverpool have now come to accept that his departure is an inevitability.
The German added: "It is only an opinion in that moment".
"Did I change my opinion? Yes". Yes, it's true. But it's better to change opinion than not have one.
'Shaqiri, we saw him play in the World Cup, I know Stoke were relegated but he had a lot of good games. "He could have joined us here, he wanted to stay that day [he signed] but it made absolutely no sense", Klopp said of his new shot-stopper.