After a long and tumultuous pursuit of Virgil van Dijk, Liverpool finally got their man on this day back in 2017 - and he was well worth the wait.
Question marks were raised over the £75million fee forked out by the Reds in order to secure the Southampton centre-back's services at the time, but it's fair to say that gamble has paid off.
The Dutchman enjoyed a debut to remember, powering in a headed winner against fierce Merseyside rivals Everton in a gripping FA Cup encounter days after signing and hasn't looked backed since.
Having helped guide Liverpool to further Champions League glory and end the club's 30-year wait for a top-flight title, Van Dijk has established himself as one of the greatest centre-backs in world football - and Premier League history for that matter.
Four years on from the day he finally put pen to paper and all rumours to rest, Mirror Football takes a closer look at the starting XI that took to the field for Van Dijk's dream debut against Everton and catch you up-to-speed with where they are now.
Have Your Say! Where does Van Dijk rank in the list of best Premier League signings? Tell us here.
Loris Karius
While it has been the stuff of fairytales for Van Dijk, the same cannot be said for poor Loris Karius.
Two costly blunders against Real Madrid in the 2018 Champions League final - 12 months prior to Liverpool claiming their sixth European crown - marked the end of the German's Anfield career.
The signing of assured keeper Alisson was made in the summer following the horror show, leading to Karius seeking first-team football in loans spells away at Besiktas and Union Berlin in the years since.
Having made under 50 appearances since joining the Reds from Mainz back in 2016, it now looks as though Karius could be heading back to his homeland in January, but this time, for good.
Joe Gomez
Despite a young Trent Alexander-Arnold breaking through, Joe Gomez featured at right-back against Everton for Van Dijk's debut that day.
After arriving from Charlton back in the summer of 2015, Gomez has seen his reputation soar under the tutelage of Jurgen Klopp and his solid form has seen him rewarded with international call-ups.
Injuries continue to wreak havoc with his promising career though and the recent £36m arrival of Ibrahima Konate from RB Leipzig has seen the 24-year-old slip down the pecking order and linked with a move away - with reports in Spain claiming Real Madrid are keen.
Joel Matip
Snapped up from Schalke on a free transfer back in 2016, the underrated Joel Matip must be one of the Premier League's best bargains in recent years.
A commanding presence alongside Van Dijk at centre-back, the German-born Cameroonian has established himself as an Anfield fan favourite but, like Gomez, has seen injuries hamper his playing time in recent seasons.
The 30-year-old continues to impress when selected by Klopp and is coming up to 150 appearances in Red.
Virgil van Dijk
What a signing Van Dijk has proven to be.
His integral part in winning trophies with this Liverpool team has led to numerous individual accolades too, with the Dutchman becoming the first - and only - defender to ever win UEFA's Men's Player of the Year award while also finishing runner-up for the Ballon d'Or and Best FIFA Men's Player in 2019.
After Van Dijk committed to a new Liverpool deal in August of this year, which will see him through to the summer of 2025, Klopp raved: "Imagine if we had to buy this boy now. Thank God we only had to give him a new contract."
Andy Robertson
Another player who joined from one of the Premier League's lesser clubs and has since gone on to become one of the best in his position is that of Andy Robertson.
The Scot joined the Reds from Hull City back in 2017 and having ousted Alberto Moreno for the left-back berth a matter of months into his Liverpool career, simply hasn't looked back.
Alongside Alexander-Arnold on the other side, Robertson has redefined the full-back role, proving to be an influential attacking threat in a free-scoring Liverpool side, in addition to being solid defensively.
Emre Can
For one reason or another, it never quite worked out at Anfield for Emre Can.
The German midfielder joined the Reds from Bayer Leverkusen back in 2014 and made his 167th and final Liverpool appearance in the Champions League final defeat to Real Madrid four years later.
After seeing his contract run down, Can joined Italian giants Juventus and subsequently won two Serie A titles before Borussia Dortmund took the midfielder back to his homeland, initially on loan, before making the deal permanent in 2020.
James Milner
The man who opened the scoring from the spot on Van Dijk's Liverpool debut simply continues to defy belief.
At the age of 35, James Milner - otherwise known as 'Mr Versatile' - remains a key figure in Klopp's Liverpool team on and off the pitch and is still regularly deployed by the German coach to this day.
“I am blessed to have a player like this," Klopp gushed over Milner back in 2019.
Alex Oxlade-Chamberlain
Another former Southampton star, Alex Oxlade-Chamberlain joined the Reds following a £35m move from Premier League rivals Arsenal back in August 2017.
The midfielder has shown flashes of his undeniably talent in his four years at Anfield, but much like the aforementioned Gomez, has seen injuries ravage his career.
With fitness concerns to a number of midfielders proving to be the theme of this current Premier League campaign for Klopp, the Ox has managed 21 appearances so far this season and looks to be working his way back to his best.
Adam Lallana
After dazzling with Southampton and breaking into the England national team, Lallana was snapped up by Liverpool for a fee in the region on £25 back in 2014.
The man who won the penalty for Liverpool's opener against Everton on Van Dijk's debut struggled to earn regular minutes under Klopp as the German's Anfield revolution continued to take shape.
The 33-year-old now plies his trade with south coast side Brighton after bidding a teary farewell to the adoring Liverpool faithful back in 2020 in search of regular first-team football.
Sadio Mane
The connections between Southampton and Liverpool really do run deep, don't they?
Mane swapped the Saints for Anfield in the summer of 2016 for £34m as a raw and burgeoning talent.
Fast-forward five years and the Senegalese striker has become one of the most clinical attackers in one of the most successful forward lines the Premier League has ever seen.
A 100th Premier League strike earlier in the season made him only the third African - behind Didier Drogba and and fellow teammate Mohamed Salah - to reach the landmark, and well and truly lay any doubts over his initially signing to rest.
Roberto Firmino
The FA Cup clash against Everton proved to be a fiery one for the often jovial Roberto Firmino as he came together with Mason Holgate after the Toffees defender shoved him over the Anfield advertising hoardings.
Firmino had the last laugh though as Van Dijk's header secured the Merseyside bragging rights and Liverpool's passage to the fourth round.
In truth, there have been very few occasions when the Brazilian trickster hasn't been smiling since swapping Hoffenheim for Anfield back in 2015 and a hat-trick against Watford earlier in the season once again underlined Firmino's worth to this Liverpool side.
