Now worth £21m less: Spurs must regret making "ridiculous" 2020 signing

As with all clubs, Tottenham Hotspur have made their fair share of ill-thought-out and expensive signings over the years.
The likes of Richarlison, Tanguy Ndombele and Giovani Lo Celso, while not necessarily bad players, are all examples of transfers that proved to be a massive waste of funds.
However, aside from the Brazilian, at least most of the club's poor investments have been taken off the books in recent seasons.
That said, there is a player who joined the club in 2020 for a sizable fee and has since seen his valuation crater, so when he does eventually leave N17, it will be for an enormous loss.
Spurs' 2020 signings
While it would be fair to describe Tottenham's signings in 2020 as mixed, that would imply there were at least a couple of successes in there, and the loaning in of Gareth Bale was certainly one of those.
The Welsh icon returned to North London for the 20/21 season, and while he wasn't the same player who left, he was still a great addition to the squad.
For example, in 34 appearances, totalling just 1680 minutes, the Cardiff-born star racked up an impressive tally of 16 goals and three assists.
That means he averaged a goal involvement every 1.78 games or every 88.42 minutes.
A far less successful signing that summer was Matt Doherty, who joined the North Londoners from Wolverhampton Wanderers in a £14.7m deal that August.
Unfortunately for the Irish international, he would make 71 appearances for the first team across the next two and a half seasons, only to have his contract terminated by mutual agreement in January 2023, after which he joined Atlético Madrid for an even more unsuccessful six-month stint.
However, while Doherty's time with Spurs was ultimately a failure, at least the club was able to cut their losses early and move on, which cannot be said about another player signed that summer.
The Spurs signing worth millions less today
There were a few other signings that didn't work out from the summer of 2020, such as Carlos Vinicius and Joe Rodon, but neither of those players ended up costing Spurs too much in the long run.
The same, however, cannot be said for Sergio Reguilón, who joined the North Londoners in September that year for a fee of around £28m.
Things started well enough for the Spaniard, as in his first campaign for the Lilywhites, he ended up making 36 appearances, in which he provided five assists, and then for much of his second year with the club, he remained the first-choice left-back, making 31 appearances, scoring two goals and providing three assists.
However, towards the end of that season, he picked up a groin injury and then, at the start of the following season, he was sent on loan to Atlético Madrid, where a combination of injuries and lacklustre form saw him make just 12 appearances across all competitions.
The following year saw him spend the first half of the campaign on loan with Manchester United, where he played just 12 games, and then the second half of the campaign on loan with Brentford, where he made 16 appearances, including one against West Ham United, where a particularly bad foul saw Gary Neville brand him "absolutely ridiculous."
This season has seen the Madrid-born full-back remain in North London.
However, it's crystal clear that Postecoglou does not rate him, as even though he's been fit, the Australian has handed the Spaniard just 242 minutes of first-team football across five appearances, and that was only likely down to the club's defensive injury crisis.
Unsurprisingly, two years of underwhelming loan moves and being completely frozen out of the first team this season has seen the 28-year-old's valuation plummet, with Football Transfers now valuing him at up to €8.5M, which comes to about £7m, or a whopping £21m decrease on what he cost Spurs in 2020.