Thomas Tuchel has moved to manage expectations of Chelsea ahead of a crucial week that will see them return to Champions League action and contest the EFL Cup final.

Chelsea played their first Premier League game in nearly a month on Saturday, beating Crystal Palace at Selhurst Park thanks to a late Hakim Ziyech goal.

In the intervening month, Chelsea progressed in the FA Cup and won the Club World Cup for the first time, defeating Palmeiras in extra-time.

Tuchel complained about Chelsea's packed schedule after beating Palace, acknowledging his team looked "a bit drained and exhausted".

But they have little time for rest with Lille visiting Stamford Bridge in the first leg of their Champions League last-16 tie on Tuesday and then a showdown with Liverpool at Wembley on Sunday, as Chelsea look to claim a second trophy of the season.

Looking forward to an important week, Tuchel tried to ease the pressure.

"I think it is very important for us in this moment to be realistic and not over-expect from us," he told reporters.

"Also accept games against teams in mid-table or the lower end of the table can become difficult games. Once we accept that, it is the first step to feel a certain freedom and to become better, that we don't over-expect.

"We should not expect too much about how big others see us and if we are the favourites against Lille, just accept it is a phase where things feel a bit tight and a bit more difficult than in other times.

"We will accept it and this is the situation for the match on Tuesday. First of all we play at Stamford Bridge and we are confident to have a good performance because we deliver on a high level in knockout matches, cup matches, Champions League matches."

Despite his previous comments about fixture congestion, Tuchel is not especially worried about the tight turnaround being an issue before facing French champions Lille.

"I think that Saturday to Tuesday evening for us as a home game and playing in London should not be a problem," he added.

"Sometimes it can cause a big advantage if there is a tight schedule, but we will be ready to fight with Lille on an okay level so that should not be decisive."

Thomas Tuchel admitted Chelsea must improve after looking "drained and exhausted" in their 1-0 win at Crystal Palace, but praised his team's defensive solidity following Hakim Ziyech's late winner.

Ziyech's 89th-minute strike meant the Moroccan has scored in three successive league games for the first time since doing so in the Eredivisie with Ajax in September 2019, and kept the London club within seven points of second-placed Liverpool in the Premier League table.

Chelsea were far from their best throughout the contest, however, managing just nine attempts on goal in the match, while striker Romelu Lukaku had seven touches of the ball, the lowest figure since Opta's Premier League records began in 2003-04.

Speaking after the match, Tuchel conceded that Chelsea were not at their best at Selhurst Park, before hitting out at their congested fixture list.

"Every team will have games like this, especially between December, January and February, where the conditions can create adversity", said the former Borussia Dortmund and Paris Saint-Germain boss. 

"If we had another draw, maybe we'd talk about this game longer, but when you win it you have the chance to move on and forget it.

"We won't wake up tomorrow wondering what we could do better.

"We look a bit drained and exhausted. Everyone is giving their very best, but we are struggling a little bit, so it's important to win and keep going."

Romelu Lukaku had one of the quietest games in Premier League history as Chelsea overcame Crystal Palace 1-0 on Saturday. 

A last-gasp goal from Hakim Ziyech stole all three points for Chelsea, who looked to be heading for a disappointing draw at Selhurst Park following an ineffectual display from Lukaku. 

The Belgium international had just seven touches across the entire match. That is the fewest in a single top-flight game for a player to feature for at least 90 minutes since Opta started collecting the data in 2003-04. 

Lukaku only had two touches in the first half – one of which was from the kick-off – and completed just four of his six passes. 

He did not register a single shot and was caught offside twice, with one of those leading to Ziyech having a goal disallowed by VAR. 

Asked about Lukaku's lack of touches, head coach Thomas Tuchel said: "It says he was not involved and could not make a point. I'm not sure it says so much about us in general." 

Lukaku scored in the semi-final and final of Chelsea's Club World Cup success last week but has found the back of the net just twice in his past 14 Premier League outings.

Mason Mount has been ruled out of Chelsea's next two matches with a foot injury, but Thomas Tuchel is pushing for the midfielder to return in time for next week's EFL Cup final.

England international Mount limped off in the first half of Chelsea's Club World Cup final victory against Palmeiras last weekend after damaging ligaments in his ankle.

That was the 23-year-old's 34th appearance of the season in all competitions, level with Antonio Rudiger for the most of any Chelsea player.

Mount's 15 direct goal involvements this season are the most of any Blues player, the England international having scored seven and assisted eight.

Tuchel is therefore eager to get Mount back to fitness in time for the EFL Cup final with Liverpool at Wembley on February 27.

Asked for an update on when Mount could return, Tuchel said at a news conference on Friday: "We will push for the EFL Cup final. We will push. 

"He has injured ligaments. Returning against Lille in the Champions League [on Tuesday] seems very, very close, but we will try hard for the EFL Cup final."

Tuchel also confirmed ahead of Saturday's trip to London rivals Crystal Palace that Reece James – who has not played since December – is set to return to training next week.

Cesar Azpilicueta is therefore expected to fill in once again on the right-hand side of the defence against Palace, a week on from lifting the Club World Cup in Abu Dhabi.

The Spain international has won every trophy available at club level with Chelsea, but he is set to become a free agent at the end of the campaign.

Tuchel remains a big fan of the long-serving defender, who has racked up more than 450 appearances for the club.

"He's always important; he has been super important since day one," Tuchel said. "We had a good connection from the first day.

"He gets better with every game he plays, he leads by example, which is always super nice to have.

"Now he has collected so many trophies and an incredible career at one club which is outstanding.

"He embodies everything that Chelsea stands for, being relentless, humble and a warrior at the same time. I'm happy to have him."

When watching games from pretty much any league in the world, there is a reasonable chance one of the players featured will be described as "on loan from Chelsea".

Such is the volume of players the recent FIFA Club World Cup winners send out on loan each season, they have even had their own WhatsApp group to keep in touch, as revealed a few years ago by Patrick Bamford.

The Leeds striker, who was on loan at Crystal Palace from Chelsea at the time, said: "The loan department set it up and allowed people in. Sometimes it drains your battery when everyone is messaging each other."

It had been seen as a ploy for the London club to hoard players for several years before selling them on for a profit once they had established themselves, but in recent times, especially with youngsters who came through the youth ranks at Cobham, it seems the chance of a first-team appearance isn't as fanciful as it once was.

The likes of Tammy Abraham, Mason Mount and Reece James went on to become regular first-teamers after successful loan spells elsewhere.

Conor Gallagher has been loaned out by Chelsea four times and is currently turning out for Palace, earning valuable Premier League minutes, just as he did last season at West Brom.

The 22-year-old is yet to make his first-team debut for the Blues, but in light of his performances for the Eagles, his long wait could potentially be over next season.

Ahead of Chelsea's trip to Selhurst Park to face Palace on Saturday, where Gallagher will be ineligible to play against his parent club, Stats Perform takes a look at whether he could indeed have a future at Stamford Bridge.

Little by little, Gallagher impresses Tuchel

Speaking in December, Blues boss Thomas Tuchel said: "We love Conor. We are convinced about him.

"We took the decision for Conor because when we looked at the midfield - Mateo Kovacic, Jorginho, N'Golo Kante - he was considered number four in the group.

"Conor knew this all the way. An opportunity came up where he could clearly see more minutes and more responsibility."

Tuchel ended up signing Saul Niguez on loan from Atletico Madrid, but the Spaniard has failed to make an impact during his time in England.

Gallagher, meanwhile, has scored seven goals in 21 Premier League appearances this season, including braces against Everton and West Ham, as well as a goal and an assist in Palace's shock 2-0 win at Manchester City in October.

It has been a lengthy journey already for the player, though, having been loaned to Charlton Athletic in 2019.

He impressed so much that Chelsea cut his loan short in the January window as, despite Gallagher's performances, Charlton were struggling in the Championship and he was instead sent to Swansea City, who were challenging for promotion.

Although he failed to score during his time in Wales, he still impressed then Swans manager Steve Cooper – who had managed England's U17s to World Cup glory in 2017 – as he grabbed five assists in his first nine games at the Liberty Stadium.

The next logical move was the Premier League, and Gallagher was loaned to West Brom for the 2020-21 campaign, where he made 32 appearances in all competitions, before heading to Selhurst Park for another season of top-flight football.

Although he performed well at West Brom, Gallagher has undoubtedly stepped up a gear under the tutelage of Palace's Patrick Vieira, and even earned his first senior England cap when he came on as a substitute in the 10-0 thrashing of San Marino in November.

It has not just been a case of him looking good among his team-mates at Palace. Gallagher actually stacks up well against most Premier League midfielders.

Only Arsenal's Emile Smith-Rowe and Bruno Fernandes of Manchester United (eight) have scored more this season than Gallagher's seven, while only Manchester City's Ilkay Gundogan has a higher expected goals rate (6.22) than Gallagher's 5.47, which is based on the quality of the chances for a player.

Like Mason, can Gallagher mount a challenge at Chelsea?

It is hard to ignore the fact that Gallagher's improvement this season has come under a manager who was one of the best midfielders in the world during his playing days in Vieira, much like Mount grew significantly while working under Frank Lampard both at Derby County and Chelsea.

Mount's is clearly the path that Gallagher should aim to tread. From being a promising youngster out on loan, he became an integral part of a European and world championship winning side.

Gallagher can take heart from the fact that Tuchel has already expressed his admiration, and the German has been happy to continue to give young players chances where he can, but it remains a place that Gallagher will have to earn.

Compared to Chelsea midfielders who have played more than five games this season, Gallagher measures well on chance creation, with only Mount (2.13) creating more per 90 minutes than his 1.61.

In terms of profile, Gallagher is certainly more in the mould of a Mount than any other of Chelsea's current midfielders. Both look to get forward whenever possible, and have more touches in the opposition box per 90 than any of the Blues' other options (Mount = 5.21, Gallagher = 3.07).

They also both have significantly more penalty box entries per 90 than any other Chelsea midfielder with over five Premier League appearances this term (Mount = 7.78, Gallagher = 5.22), with the next highest being Kante with 2.72, and a higher xG excluding penalties per 90 (Mount = 0.24, Gallagher = 0.27), with the next highest being Loftus-Cheek with 0.14.

The issue with Gallagher being so similar to Mount is that he'd likely find himself being in an either/or situation. Tuchel prefers to have two controlling players in his midfield three, usually two of Jorginho, Kante and Kovacic, so it seems unlikely he'd start Mount and Gallagher together very often.

It therefore seems like, should Tuchel indeed look to utilise him at Stamford Bridge next year, it will be Ross Barkley's place in the squad that Gallagher slots into, and the former Everton man has only made four starts in all competitions this season, two of which came in the EFL Cup.

The question then becomes one of whether Gallagher is happy with that role after two seasons of regular football in the Premier League and with an England spot to fight for ahead of the World Cup in November.

For the time being, it is not something that the player needs to focus on too much. He can simply enjoy the game time he is getting in south London and try to perform to the sort of levels that will give Tuchel a decision to make when planning for next season.

Chelsea have been crowned European and world champions since Thomas Tuchel's appointment just over 12 months ago.

The Blues, however, finished fourth in the Premier League last season.

Chelsea are third this term but 16 points behind leaders Manchester City with a game in hand, and it seems recruitment is in the offing.

TOP STORY – BLUES SET TO SPLASH THE CASH

Chelsea are set for an off-season transfer splash as they prepare to back Tuchel fresh from their Club World Cup triumph, according to The Telegraph, 

The Blues have their sights firmly set on signing long-term target Jules Kounde from Sevilla as a priority in the upcoming off-season.

Chelsea are also interested in West Ham United's England international Declan Rice and Monaco's 22-year-old French midfielder Aurelien Tchouameni.

ROUND-UP

- Football London reports Arsenal are plotting a move for Chelsea forward Armando Broja, who is currently on loan at Southampton. The Gunners are short on attacking options after Pierre-Emerick Aubameyang's exit and with Alexandre Lacazette and Eddie Nketiah running down contracts.

- Fichajes also claims that Arsenal are interested in Milan forward Rafael Leao, along with Newcastle United.

- Barcelona are trying to agree new deals with star young pair Gavi and Ronald Araujo amid interest from Liverpool and Manchester United, reports ESPN.

- Juventus are willing to listen to offers for Adrien Rabiot and Alex Sandro according to La Gazzetta dello Sport.

- Fichajes claims that West Ham want to sign Lille defender Sven Botman, Villarreal left-back Pervis Estupinan and Real Sociedad centre-back Robin Le Normand.

Thomas Tuchel felt Chelsea were deserving Club World Cup winners and has challenged his "relentless" side to keep adding to their growing collection of titles in the remainder of the season.

Kai Havertz converted an extra-time penalty to secure a 2-1 win against Copa Libertadores holders Palmeiras, as Chelsea added success in FIFA's showpiece club tournament to the Champions League and Super Cup titles they lifted last year.

Tuchel, who missed his team's semi-final win over Al Hilal after testing positive for COVID-19 but was able to travel to the United Arab Emirates for the final, was full of praise for his charges after the contest.

While admitting Chelsea needed a little luck to avoid a shoot-out, the beaming former Paris Saint-German boss considered this a deserved victory.

"You need luck to score late on, but we were relentless, and we did not stop trying", Tuchel told Channel 4, having seen Romelu Lukaku's opener cancelled out by Raphael Veiga's spot-kick.

"We did not give in. We had the lead, then lost it, but never stopped. It was deserved, but it's also lucky when you score so late.

"The penalty [from Havertz] did not look nervous but for sure he was. 

"You cannot not be nervous in this situation. We trusted the statistics, and I'm happy for him."

Chelsea are eager to fly out Thomas Tuchel to the Club World Cup final, as Jorginho said the head coach could make all the difference.

Tuchel tested positive for COVID-19 in the lead-up to the trip to the United Arab Emirates, with Chelsea announcing that blow to their preparations last Saturday.

The Champions League winners beat Al-Hilal 1-0 in the semi-finals without Tuchel on the touchline, thanks to a Romelu Lukaku goal, and now they are preparing to face Palmeiras in the final.

Brazilian giants Palmeiras, holders of the Copa Libertadores, were 2-0 winners against Al Ahly and will present tough opposition for Chelsea.

Saturday's trophy match is one that Tuchel would want to attend, and Chelsea reportedly have a private jet on standby, but he needs negative test results before he can be cleared to travel to Abu Dhabi.

Asked about preparing for the game without Tuchel, Jorginho said: "Of course it's different. His energy helps a lot, but he's not here now and the staff is trying to do their best. We can feel that.

"We feel sorry Thomas is not here with us, but he's involved all the time, in touch with the staff and team. We can feel the staff, all of them, are doing their best."

It would help, however, if Tuchel can be present in person, rather than making plans from afar.

"Of course it gives you more," Jorginho said. "There's more energy in the changing room. It'll be really important for us if he could be here. That's what we hope but at the moment we just don't know. We can hope."

Chelsea assistant boss Zsolt Low, set to lead the team if Tuchel cannot make the trip, added: "We still hope he can come and enjoy the group and the final as soon as possible.

"He is following the rules and getting tested. There is a lot of time. Any test he does could be negative. We hope this happens in the next hours. Thomas absolutely thinks he can be there, and the team and the whole staff want him to come for the final.

"We hope he can come, but if he cannot, we are still well prepared. We have had a lot of meetings. We had a video conference after the first game analysing it, and seeing what we can do better and what problems we had. We are absolutely clear what happened in the first game and what we have to do better in the second game."

Chelsea have yet to decide whether goalkeeper Edouard Mendy, back from helping Senegal win the Africa Cup of Nations, should come back into the team in place of Kepa Arrizabalaga.

"We have to take this decision tonight or latest tomorrow," said Low. "We talk to Thomas about it, we talk with the goalkeeper coaches, and we will make the final decision tomorrow, some hours before the game.

"Whoever sits on the bench has nothing to be worried or sad about. Both goalkeepers have had big performances in the last weeks, and that's why it's just a decision for this game."

Jorginho will be targeting another major trophy, after his Champions League win with Chelsea and Euro 2020 triumph with Italy last year.

"It's an important trophy. It's February. It's so much. We really want it. We're not thinking about the Premier League right now, we're thinking about tomorrow," Jorginho said. "That's the important thing right now."

This will be the fourth Club World Cup final between an English and a Brazilian side, making it the most commonly contested final by teams from two specific nations.

Brazilian sides have won three of their four games against English opposition at the tournament, the exception being a 1-0 defeat for Flamengo against Liverpool in the 2019 final.

Chelsea lost to Corinthians in the 2012 final, and Palmeiras are bidding to become the fifth Brazilian winners of the competition.

Palmeiras certainly head into the final in strong form, having achieved a 10-game unbeaten run across all competitions (W7 D3), with their last defeat coming back in November against Fortaleza in the league.

Reece James was a surprise inclusion in Chelsea's squad for the Club World Cup, travelling to Abu Dhabi on Sunday despite Thomas Tuchel saying he would miss the tournament.

A 23-man Chelsea party headed to the finals after Saturday's nervy 2-1 FA Cup win over Plymouth Argyle.

James was not expected to be among them as he recovers from a hamstring injury, with coach Tuchel saying before the Plymouth game the wing-back required "a couple of weeks" before even returning to training.

The Chelsea boss said James would not travel.

With Edouard Mendy to join his club-mates after playing for Senegal in Sunday's Africa Cup of Nations final, the Blues are missing only two first-team players.

Ruben Loftus-Cheek, who is dealing with a minor injury, has not made the journey, while Ben Chilwell's season has been curtailed by a serious knee issue.

For now, however, Chelsea are without Tuchel, who tested positive for coronavirus and intends to link up with his team at a later date.

Reece James is still a few weeks from his return from injury as Thomas Tuchel confirmed the defender will not travel with Chelsea to Abu Dhabi for the Club World Cup.

James suffered a hamstring injury at the end of December and has been unable to return to team training since.

His absence proved a big blow for the Blues given James' importance in his right wing-back role – between the start of the season and December 29, he had a hand in the joint-most goals (11) across all competitions in their squad, while only Mason Mount (42) laid on more key passes than James (38).

James' injury was especially frustrating for Chelsea given they had already lost Ben Chilwell for the rest of the season after sustained a serious knee injury the previous month.

And James will not be back in the immediate future, Tuchel confirmed on Friday, though he did not seem too disheartened at Chelsea's inability to bring in extra cover for the wing-backs during the January transfer window.

"We tried and had ideas, but in the end we stick to what we have and are happy," Tuchel told reporters ahead of Saturday's FA Cup fourth-round clash with Plymouth Argyle.

"Reece will come back at some point [this season], unfortunately not Ben Chilwell, but Reece will come back and compete for a place in the squad.

"Azpi [Cesar Azpilicueta] at the moment is in fantastic form and a fantastic place. That is why it's fine. We try to find solutions in our squad.

"[James] is not in team training yet. After a couple of weeks, he will need some time in team training to get the rhythm and confidence back before we think about playing him.

"So he does not travel with us to the Club World Cup. For Reece, I am too long a coach to get overexcited by pure dates that are maybe out there.

"I know you can have setbacks and can take longer sometimes. The injury was a big injury and I felt it straight away. The diagnosis was straight away it was a big injury and from there we have to be patient.

"It's always a bit of a tricky one, and he is a physical player. He caught flu in the last week and lost days in his process of coming back to the team.

"We are patient and we want to have him on the pitch [on Saturday], of course, but it's not happening at the moment and we have to stay patient."

Although Chelsea did not sign anyone in January, Kenedy returned from a loan spell with Flamengo and will fill a void in the squad for the rest of the season.

Tuchel believes the winger could be a useful option as a wing-back and he was enthusiastic about giving the 25-year-old Brazilian a second chance at Chelsea, for whom he has played just 15 Premier League games since joining from Fluminense in 2015.

"It's a clean slate and I think he knows it," Tuchel said. "I followed Kenedy for many years, I followed him when he played for Newcastle.

"He was very promising in the early part of his career. He lost track a little bit and maybe couldn't fulfil the demands from the outside I had, but this is life.

"He gets a second or third chance to be here, and it's not about what happened. He was good in pre-season, he decided he wanted to go back to Brazil and try there. But having Kenedy and Emerson on loan, Kenedy was possible [to bring back] and now he is here.

"He is a very nice guy, very talented, and let's see where he is. It's a huge opportunity, and I am very happy to give it to him and help him make the best of it."

Hakim Ziyech's excellent recent displays for Chelsea are making Thomas Tuchel reconsider his approach. 

A stunning, curling effort from 20 yards saw Ziyech put Chelsea on the path to a 2-0 victory over Tottenham in the Premier League on Sunday, with Thiago Silva adding the second. 

It followed his goal against Brighton and Hove Albion, with the former Ajax winger benefiting from a formation change by Tuchel following injuries to wing-backs Ben Chilwell and Reece James. 

Tuchel acknowledged being able to play in a more advanced wide position is benefiting Ziyech and it is something he wants to consider as a long-term option. 

"It was a very nice goal actually. The build-up to the goal was good, the movements around Hakim to bring him into this position, and the shot was, of course, brilliant," said Tuchel. 

"It was one of the very nice goals so far and I am very happy because he deserves it first of all today. It was a very important goal to get the lead and so well done, excellent. 

"It was one of his best matches today because he was very reliable. It was also maybe his best position to be on the wing. We had the wide position on the right wing, that position does not normally exist in that particular manner when we play 3-4-3, it is more of a wing-back. 

"Maybe we can think about doing this. It was good because it gave him the opportunity to take risks where it was possible to take risks. He was very reliable on the ball in moments where it is necessary. 

"The work-rate was always outstanding. You can always rely on him on work-rate and counter-pressing. So yes, well done and he needs to keep on going like everyone else." 

Chelsea have now won four games against Tottenham this season, the three most recent of which have come in January. 

Spurs have failed to score in six straight meetings with the Blues - the longest barren run against a single opponent in their history - and their goalless streak now stands at 547 minutes. 

Frustrations seemingly boiled over in the stands with Antonio Rudiger appearing to be targeted by missiles thrown by visiting spectators, though Tuchel did not feel the incident warranted sweeping action. 

"I'm not worried. I mean, I sent a message to our fans and supporters [before the game] that we love to have them close to the pitch. We love that it is a brilliant atmosphere, that they are not behind fences, behind nets, whatever. From there everybody needs to show respect and behave and follow guidelines," said Tuchel. 

"In general, I am not concerned because right now I enjoy the atmosphere, also in away stadiums. It is brilliant, and if this is a new trend we should act together so it stops as soon as possible to protect the environment of this game and the atmosphere because it is absolutely unique here in England." 

Antonio Conte claimed Tottenham are "many years" from the level of Chelsea following Sunday's 2-0 Premier League defeat at Stamford Bridge.

Hakim Ziyech and Thiago Silva goals condemned Spurs to a fourth defeat of the season against their London rivals, their away league run against the Blues now standing at one win in 32.

Conte's side lost both legs of the EFL Cup semi-final to Chelsea and have now gone six consecutive games without scoring against the European champions, the first time in their history they have ever failed to find the net in as many matches against the same opponent.

Conte has spoken previously of the need for Spurs to strengthen if they are to challenge the top sides, despite having led them on a nine-game unbeaten run in the top flight after taking over from Nuno Espirito Santo in November.

After their latest loss to Chelsea, which cost them the chance to move into the top four, the former Inter boss suggested it would take many transfer windows to build a squad capable of matching the best.

"I don't like to lose. To comment on a defeat is always difficult for me," he told Sky Sports. "But to have nine games in a row without defeat was important, and in this moment, the gap with the other teams, like Chelsea, it's a really important game.

"I'm proud of the effort of my players. We tried to do everything, but sometimes it's not enough, especially when you're playing against a team like this: a starting XI of strong players; on the bench, around the club, there are other players. There is a big difference between us and a top team."

When asked about strengthening the squad before the transfer window closes, he said: "I repeat, this is not the right moment. The club know very well what I think. There is not one transfer market to close the gap.

"In the last five years, this gap became very, very big. Now, it's not simple to find the solution in a short time. I'm only focused on the players to work. We have four months to try to give everything, but if we think we resolve the situation with the transfer market, it's not the reality.

"You need many years. For sure, we have to start, and there is a point to start. For many years, the quality of the squad decreased instead of improved."

Spurs thought they had taken the lead on Sunday when Harry Kane finished from Steven Bergwijn's cross, but the goal was disallowed for a push in the back of Thiago Silva.

"I know it's difficult to comment, and I don't want to comment on the referee's decision, but to disallow this goal in England was incredible," said Conte.

"But, I repeat, the referee tried to make the best decision."

Chelsea coach Thomas Tuchel was also surprised the goal was ruled out at the time, but he had nothing but praise for the effort of his players as they ended a four-game run without a Premier League win.

"We were working extremely hard for it, it was a tough match, but I'm very happy because the effort was outstanding and it was a deserved win," he said. "It's so hard to create chances against them, but I think we were relentless and kept on believing.

"The table is the table. In the end, it's our responsibility to prove ourselves every third day. Now we have a break, and it was important to go into this break with a victory. There is no substitution for a win, and for the feeling. You cannot produce it artificially, so we needed this, but we needed also to do things better and keep on believing."

Chelsea boss Thomas Tuchel has not ruled out making a signing in the remainder of the January transfer window, but stopped short of making any guarantees.

The Blues have seen their title charge come to a grinding halt in recent games, having not won any of their last four Premier League outings and only claiming victory twice from their last nine.

They now sit 12 points behind leaders Manchester City having played a game more, and a point behind second-placed Liverpool having played two games more.

When asked at a news conference ahead of Sunday's game against Tottenham whether any January additions are likely, Tuchel replied: "I cannot say no to it. Also, I am not convinced it is a clear yes. Let's wait and see."

The game with Spurs at Stamford Bridge will be Chelsea's 16th since the start of December, and Tuchel believes that the hectic schedule coupled with injuries has played a significant part in his team's drop in form.

"The schedule that we had in particular was a bit too much," he said. "At the same time we struggled with injuries, first in midfield then in the second period it was strikers and now it's suddenly all defenders who are out. Yeah, it's a bit awkward.

"We struggled to deal with it and find the same rhythm, find the same consistency in our results... but still the way we played and approached the games was always okay."

Following a 1-0 defeat at Manchester City last weekend and a 1-1 draw at Brighton on Tuesday, the former Borussia Dortmund coach gave his players two days off in preparation for the Spurs game, and confessed that he spent his time at the dentist.

"You really disconnect at the dentist," he said. "It is hard to think about football when you are in the dentist chair.

"We needed [a break]. And I meant all of us. This is a team effort and I felt that the team was mentally tired, which I could understand. I felt them disappointed and frustrated after the result at City and it was harder for us to overcome the obstacles that for us are normal to overcome.

"There are reasons for it. Reasons that we talked about, reasons for which we cannot be blamed.

"I know it is always like this and we don’t want to make excuses, but we want to be adult enough and honest enough to look at the reasons why we feel this kind of fatigue."

Thomas Tuchel has spoken of his admiration for Ousmane Dembele amid reports the Barcelona outcast could be a transfer target for Chelsea.

Dembele looks to be on his way out of Barca due to a contract stand-off that has turned sour.

The France winger warned the Catalan giants that he would not be "giving in to any blackmail" after Barca director Mateu Alemany ordered him to find a new club "immediately".

Dembele is only under contract with the Blaugrana until the end of the season and Alemany declared he expects the 24-year-old to move on before the transfer window closes at the of this month as "we want to have players committed to the project."

Tuchel saw Dembele's talent first-hand when he played under the Blues boss at Borussia Dortmund in the 2016-17 season before the former Rennes man joined Barca for an initial fee of €105million.

The Barca contract rebel's chances created per game average of 2.36 this season is better than any of the Chelsea squad who can play in the same position, while his dribbles completed (6.69) also compares favourably.

Dembele has also had more shots per game (4.46) and made more crosses from open play (6.69) than the likes of Hakim Ziyech, Callum Hudson-Odoi and Christian Pulisic.

And while Tuchel stopped short of declaring his interest in his former player, the Chelsea head coach is well aware of what he is capable of.

"He is a very good player when he is at his top level," Tuchel said. "I am very fortunate to have trained him in my time at Dortmund.

"It was only one year; it should have been longer. I needed to leave and he decided to leave. From there we are not in closest contact.

"We met here and there because of his duties for the French national team and of course I was in Paris so this was more or less when they were preparing for national duties."

Chelsea face a big Premier League derby with Tottenham at Stamford Bridge on Sunday.

Thomas Tuchel can understand why questions are being asked about Romelu Lukaku's disappointing form is himself unsure why the striker is currently struggling.

The Blues' club-record signing has scored just once in his last five appearances, with that solitary goal coming against non-league Chesterfield in the FA Cup.

Lukaku's struggles, coinciding with his return to the side after being dropped in the wake of a controversial interview, have been laid bare in his recent Premier League outings.

He had 21 touches in last week's 1-0 loss to Manchester City – the fewest of any starting player for either team – and 18 in Tuesday's 1-1 draw with Brighton and Hove Albion.

From his three shots across the two games, the 28-year-old hit the target twice but could not get on the scoresheet, leading to some public criticism from Tuchel in the week.

And ahead of Chelsea's home league meeting with Tottenham on Sunday, Tuchel said it is hard to pinpoint exactly what is going wrong for Lukaku in his second spell at the club.

"Welcome to reality," he said at Friday's pre-match news conference when asked if Lukaku is perhaps unfairly targeted. 

"We are in the spotlight, we are judged, all of us and that's daily business. It's like this. If you are a decisive player, if things go very well, people talk about you.

"If not, the same people talk about you. This is part of the business, like it or not. Nothing more to say."

Tuchel added: "I don't know if I can explain his form. It's very rare in football that you have a situation or a problem with a one-thing solution.

"It's always a mix of a lot of influences. He was already more involved. He is struggling. We have already discussed the reasons.

"But he is not the only one we rely on to win games. There is nothing special to it."

Chelsea enter this weekend's London derby with Tottenham winless in four Premier League matches, leaving them 12 points behind leaders City having played a game more.

However, the Blues have already won three games against Spurs in all competitions this term, including twice in this month's two-legged EFL Cup semi-final.

The last Premier League team to win three games against a single opponent in the same month were Aston Villa against Blackburn Rovers in January 2010.

Tuchel does not believe his side's recent cup success against Antonio Conte's men will act as any sort of psychological advantage on Sunday, however.

"We play now three matches in such a short time which is pretty unusual, uncommon normally," he said.

"That's why I think they know what we do, and we know more or less what they do. It’s again for us to show up in games like this.

"They come from a late victory, that gives them a boost. We come from two wins in the cup.

"We play the match – it's not about having advantages and being philosophical about it. It's about delivering, being in the right mood and attitude to deliver a top performance."