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Hindsight is a wonderful thing.

And it's even sweeter when you're rivals are well and truly put in their place.

Just over a year ago, Liverpool agreed a £75m deal to sign Virgil van Dijk from Southampton. It was a world record fee for a defender and resurrected a transfer that had looked to have fallen through the previous summer.

There's no doubt about it, Liverpool were taking a chance paying such a fee for the Dutchman, with Jurgen Klopp convinced that Van Dijk would transform his defence.

How right he was.

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Van Dijk has helped Liverpool keep 18 clean sheets and has conceded just 17 goals during his time for the club - and he has paid back every penny of the fee paid last January.

Klopp was right. Many others were wrong.

A glance through the replies to Sky Sports' tweet announcing the deal makes very interesting reading. Rivals fans ridicule Liverpool's decision to pay the big bucks for Van Dijk.

One wrote: "Absolute joke, bang average centre half, money in the prem is ridiculous!"

Another: "75M? Southampton are milking Liverpool, this is daylight robbery!"

"Southampton have done a bit of business," said one fan. "£75m for a overrated CB who has a tantrum every week, scenes!"

The replies went on and on..

"£75m for the Dutch Lovren? Bet Saints are laughing"

"Southampton laughing all the way to the bank!"

"Wow that is great business for Southampton. Only them. Liverpool have been robbed."

"HAHAHAHA 75M FOR A 1 SEASON WONDER"

"Fair play to Southampton for getting that much for him. Wouldn’t give you my left over turkey for him!!!!!"

"Bonkers. He's a decent player but £75m?? Not even in the top 5 CB's in the league. Imagine what Maldini would go for in today's market."

Liverpool have laughed last. And Jurgen Klopp has laughed loudest.

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