There seems to be an unrivalled sense of optimism around Anfield right now, with Liverpool enjoying one of their best summers in recent memory.The club have spent over £100m bringing Xherdan Shaqiri, Fabinho and Alisson Becker to the club, the latter being a world-record fee for a goalkeeper of around £56m.£54m Naby Keita has also joined up with the squad, having spent last year on-loan at RB Leipzig as part of the transfer agreement.Jurgen Klopp has addressed the issues in the squad, notably between the sticks, and confidence is growing that the Reds can muster up a serious challenge to Manchester City's Premier League title.Add to that the unforgettable run to last year's Champions League final, and it does look like Liverpool are going in the right direction.Having shelled out such a vast amount of money though, criticism is already being aimed at Klopp.The German made some comments when Paul Pogba signed for Manchester United for £89m two years ago, which do look a bit strange in hindsight."If you bring one player in for £100m and he gets injured, then it all goes through the chimney," he said at the time."The day that this is football, I’m not in a job anymore, because the game is about playing together.

"Other clubs can go out and spend more money and collect top players. I want to do it differently. I would even do it differently if I could spend that money."

Liverpool have subsequently spent a fair bit of money since then, including splashing £75m on Virgil Van Dijk to make him the most expensive defender in the history of the game last January.

However, in typical style, he has responded perfectly to the criticism he's faced.

Klopp has a good point too, as no one could've imagined the ripple-effect Neymar's £200m move to PSG from Barcelona has had.

"Did I change my opinion? Yes. It’s better to change your opinion than not have one at all," he stated.

"£100m was a crazy number but since then the world changed. We signed the most expensive goalkeeper, bam bam, there will be a few nice transfers (from others).

"It’s not about pushing through my thoughts on that and not paying big money, if Liverpool aren’t successful we have to work.

"To improve a squad like this costs money. So far it’s a really good year for us, pretty successful last year, still we need to replace players – Emre Can left, good business bringing Fabinho in.

"Shaqiri, we saw him play in the World Cup, I know Stoke were relegated but he had a lot of good games. We don’t care what the world think, like Manchester United didn’t care what I thought."

The fees in the modern game are completely mad, but with the money clubs make in revenue these days they're really just a drop in the ocean.

And if they help inspire Liverpool to domestic glory for the first time in almost 30 years, they will care even less about the critics.