It's only a few months ago that pundits were falling over themselves to express their disdain at Arsenal's decision to spend £24million to bring Aaron Ramsdale in from Sheffield United.
The 23-year-old arrived at the Emirates off the back of consecutive relegations with Bournemouth and the Blades, with criticism on social media being so vicious that he was forced to limit comments on his Instagram posts before he had even signed.
A factor in what made the discourse so vitriolic was the fact that Ramsdale ended up costing more than the Gunners had let Emi Martinez go for when the Argentine had move to Aston Villa the summer before.
Six months down the line though, it's starting to become clear that Edu and Mikel Arteta knew what they were doing.
Ramsdale has been one of the top keepers in the Premier League and is second only to Liverpool's Alisson and Manchester City's Ederson in terms of clean sheets. When you consider the 23-year-old did not actually make his debut for the Gunners until four games into the season, this is no mean feat.
As well as making some tremendous saves - most notably a seemingly impossible one from James Maddison's free kick against Leicester - the former Sheffield United stopper has revolutionised Arsenal's ability to play out from the back.
His ability to be diverse in his distribution has helped the Gunners quickly progress up the pitch by breaking defensive lines and has been a vast upgrade on what was provided by Bernd Leno in season's prior.
"I think he has settled in a group that is very welcoming that has young energy and with humble senior players that accommodate you straight away," Arteta said of Ramsdale's start to life after that remarkable save against the Foxes
"Then Aaron's character, he's full of energy, he can transmit that energy and that passion and they have great chemistry between them."
Perhaps the most satisfying thing for some Arsenal fans about Ramsdale's impressive form has been the fact that it has largely been better than that of former stopper Emi Martinez.
Martinez was once a fan favourite at the Emirates after finally getting his chance following a 10-year stay in North London following Bernd Leno's injury after project restart, and helping Arsenal win both the FA Cup and Community Shield.
Since departing for Villa Park though the Argentine keeper has incurred the wrath of many Gunners fans due to his comments about the club.
"I love everything about Arsenal," Martinez told Sky Sports . "I still love them and I'm still watching the games, but I just felt like they didn't trust me like they should have.
"That's the reality because they kept buying goalkeepers to go in front of me and I was the goalkeeper from the academy.
"When I was on a high, I still felt like they didn't deserve me because of the way they were treating me. They couldn't guarantee me the games I needed so I thought that if they couldn't guarantee me the games I needed, then I'm moving on.
"They didn't say to me that I wasn't going to play, they just didn't guarantee me the games that I wanted to play.
"So, after 10 years, I decided to leave, and it was very difficult. My family didn't understand why I was leaving when I was at such a good level at Arsenal, but it was my decision to leave and I'm really proud I did it."
This season though stats appear to be suggesting that Arsenal may have made the right choice after all.
The England international has kept out 1.41 expected goals in total this season. This is the best in the Premier League, and perhaps quite enjoyably for Arsenal fans comfortably clear of what their former stopper Emi Martinez has managed (0.81).
This is particularly vindicating for Edu who came under fire in the summer for sanctioning the decision to spend so much money on Ramsdale.
Back in September after the closure of the transfer window, when the Gunners sat bottom of the Premier League with zero points and zero goals scored from their first three games, the Brazilian made a bold prediction about what was to come.
"If you're talking about Ramsdale, Ramsdale is important as well," Edu said.
"He's English, which in that position is important because we can balance the squad. Good age, and very good, with good experience in the Premier League as well.
"For us it's clear he has a beautiful future because he went through challenging periods, but he's always been through them well. He's so positive, he's such an energetic player, which makes us comfortable to sign him.
"So he's the one who's going to be for the short, the medium and the long-term for our project. That's why we signed him."
As the Gunners look to progress in their project under Mikel Arteta, it's safe to say that Ramsdale has been one of the driving forces behind their rapid ascension since his arrival.
