Senior Chelsea players have pointed to "the worst pre-season they've had" as a possible reason for their poor form, according to head coach Graham Potter.
The Blues make the short trip to Tottenham on the back of a four-game winless streak in the Premier League, including a home loss to rock-bottom Southampton last week.
For Potter, who succeeded Thomas Tuchel in September, the pressure has continued to build as his side have slipped further down the table.
Ahead of another difficult encounter for his misfiring team, he acknowledged there were no easy answers and discussed conversations he held with some of his players about their preparation for the season before he arrived from Brighton and Hove Albion.
The club visited the United States for three games in July, before playing Serie A side Udinese twice in Italy ahead of the 2022-23 campaign.
"It is really tough," he said. "A few weeks ago, [I said] it is the toughest job of football, and there are reasons for that.
"Speaking to a few of the experienced guys, they said it was the worst pre-season they've had. Organisationally, the tour didn't work as well as they'd like. I wasn't there so I can't say.
"We thought we had made progress, but against Southampton, [it] was below par. The sky can fall. These are inconvenient facts, but that's the situation."
Potter insisted he still has the full backing of owner Todd Boehly and the Chelsea board, and added that he expects and deserves to be under the microscope.
"With results as they are, you accept criticism," he said. "That should come, that is fair. [But] the mood here has always been positive and respectful.
"That is not to say it is easy at all. My family suffers, my mental health suffers. Personally, it is hard. I've been under pressure here for four months."
Captain Cesar Azpilicueta was taken to hospital during the defeat to Southampton after he suffered a concussion, and will not be available for the Spurs clash.
Potter was pleased with his improvement though, adding: "He is as OK as you can be when you've had that. He won't be ready for the weekend, but he's doing well."
Neville: Chelsea sacking Pochettino 'would be madness'
Gary Neville says it "would be madness" for Chelsea to sack head coach Mauricio Pochettino as he is ideally suited to managing the club.
Pochettino admitted after Chelsea's 2-0 win over his former side Tottenham on Thursday that he is unsure of his future at Stamford Bridge.
The Argentinian has been under intense pressure at times this season, most recently on the back of the 5-0 loss to Arsenal last week.
Chelsea have since responded with a battling 2-2 draw at Aston Villa and the impressive win over Spurs, but doubts remain over Pochettino's future.
However, Neville insists it would be wrong of Chelsea to part company with the former Paris Saint-Germain boss at the end of the season.
"There was talk of Pochettino being under pressure a month or so ago," he told Sky Sports. "I think it would be madness to change the coach whose quality of work with these types of player is renowned.
"Making sure you have stability through another transfer window seems more critical than the idea someone else would come in and do a better job. That doesn't feel right here.
"He's a proven coach. One of the great coaches in the Premier League in the last five, six, seven years. Pochettino has had some up and down moments this season. But this is a good one."
Chelsea's victory over Tottenham moved them up to eighth in the Premier League and now within three points of Manchester United in sixth.
United have also struggled for consistency this season, raising doubts over their own manager Erik ten Hag as the end of the season nears.
There have also been reports that most of United's players will be up for sale when the transfer window opens, with or without Ten Hag in charge.
Ten Hag labelled those rumours "untrue", and Neville is adamant there will not be wholesale changes to the squad during the close season.
"To be fair, you know it's not true," the United legend said. "I mean [Kobbie] Mainoo is not for sale – there's no way that man can be sold so every player can't be for sale, it's impossible. There's no way United could sell their best young players.
"There's a lack of stability here at Chelsea at the moment, but there's a lack of stability at United. Richard Arnold, John Murtough, Patrick Stewart, Cliff Baty, all the senior management, Darren Fletcher's been moved to a different role within the club, Jason Wilcox has come in.
"I can understand why there is quite a few players who will be under pressure and potentially would be sold, but I can't believe it's every player or anywhere near that."
Pochettino's Chelsea future still unsure despite Tottenham win
Mauricio Pochettino admitted that he will need time to turn things around at Chelsea, but is unsure if he will be given it.
The Blues kept their hopes of a European place alive on Thursday with an impressive 2-0 victory over Pochettino's former side, Tottenham, thanks to goals from Trevoh Chalobah and Nicolas Jackson.
Despite getting back to winning ways, the Argentinian’s future at the club is still subject to speculation as the end of the season draws closer.
Speaking to Sky Sports after the game, Pochettino said he does not know what the future holds for him at Chelsea.
He said: "Maybe today because we won, I can explain a little bit better. I want to say enough is enough. I think all managers need time to translate their ideas and their philosophy. We need to have time, but it is not my decision.
"It's difficult to see every single week that I am under scrutiny and judgement. Yes, it's not my decision to be here or not to be here.
"I cannot tell you. I can say nothing. If we want to match the history of Chelsea, I think there is a lot of work to do. We will see if we have time to build this way.
"I am so, so proud of the guys, all the squad we have - 25, 27 players. I work for them. We want the best for them. Until the last day, we are going to work for them."
Chelsea were missing 14 first-team players through injury against Spurs but earned three points, which moved them above West Ham into eighth with 51 points.
Pochettino added: "Today was fantastic, full credit to the players. It is my first time in the season I really do feel so, so happy.
"It is the moment after 10 months the team really starts to realise how we need to compete. Today we competed really well against a great team.
" [We may need] some luck to have this type of result, it helps give belief to the players that this is the way. "
'Just work hard mate' – Postecoglou's simple answer to Tottenham's tricky question
Tottenham simply have to put in the hard graft as they look to salvage something from what is turning out to be a disappointing end to the campaign.
Spurs' Champions League hopes appear to be fading fast after they lost for a third straight game in the Premier League, going down 2-0 at Stamford Bridge on Thursday.
Tottenham have four games remaining, albeit that includes meetings with Liverpool and Manchester City, and they are seven points behind fourth-placed Aston Villa.
They were particularly vulnerable from set-pieces once again, with both of Chelsea's goals coming from such scenarios.
Asked how Spurs can turn it around, Postecoglou said told BBC Sport: "Just hard work mate, there's no major formula. We will work hard and make sure we get it right."
He added: "It wasn't a great night for us. We didn't play at the levels we needed to and didn't deserve something from it.
"We lacked belief and conviction in our game. I don't know if it is low confidence but we are not playing with the mindset we need to play the football we want to and that is something I have to look at.
"It is on me to fix it. That is what we will be doing. We had bigger issues tonight than set pieces."
Speaking to Sky Sports, the Tottenham boss said: "I feel like we've lost a bit of belief and conviction in our football and that is on me to change that.
"It wasn't about conceding the [first] goal, it was our approach to playing football and we were nowhere near good enough. That is on me.
"We've been in a bit of a grind for a while now, that is part of our challenge and part of our growth. We have to go out there and perform and sometimes you have to grind out. We were poor today."
Spurs defender Micky van de Ven, meanwhile, conceded Champions League qualification looks out of sight.
"It will be difficult. I don't want to look up to the Champions League after this game, it was not a good performance from us and it is important we play a good game on Sunday," he said.
Mauricio Pochettino, meanwhile, became the first manager to complete a Premier League double over Tottenham having previously managed them in the competition.
Chelsea are up to eighth, just three points behind sixth-placed Manchester United.
"So happy and so pleased. So happy for our players," Pochettino said.
"The first half was fantastic. Then you have to contain and suffer. Tottenham have quality players. Not too much to say, all credit to the players."
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