New Chelsea manager Maurizio Sarri has started running the rule over his squad after replacing his Italian compatriot Antonio Conte in the Stamford Bridge hotseat.
The fresh start at the club offers an opportunity for young players from the club's prestigious academy to use pre-season to stake their claim for a place in the squad.
Pre-season training had already started at Cobham before the Blues jetted off to Australia on Wednesday night to play a match against A-League side Perth Glory on Monday.
Chelsea's young squad pose for the camera as they fly out to Perth on Wednesday night
Chelsea's new manager Maurizio Sarri gets to work on the training pitch ahead of the season
The animated Italian is pictured during a pre-season training session at Cobham on Monday
July 23 Perth Glory (Optus Stadium, Perth)
International Champions Cup
July 28 Inter Milan (Allianz Riviera, Nice)
August 1 Arsenal (Aviva Stadium, Dublin)
August 7 Lyon (Stamford Bridge)
They then have three International Champions Cup fixtures scheduled - against Inter Milan in Nice on July 28, Chelsea in Dublin on August 1 and Lyon at Stamford Bridge on August 7 - as they count down to the new season.
The Blues, as last season's winners of the FA Cup, play reigning Premier League champions Manchester City in the Community Shield at Wembley on August 5.
As ever, a number of young Chelsea hopefuls have already been sent out on loan, including the likes of Trevoh Chalobah, Reece James, Lewis Baker and Jake Clarke-Salter.
But others have been retained and have an opportunity to impress Sarri over the coming weeks. We take a look at five youngsters hoping to catch the Italian's eye.
17, defender, seven first team appearances
The dreadlocked defender certainly stands out in training and has impressed at Chelsea since moving from League Two club Exeter City last summer.
Since then, it's been a whirlwind for the 17-year-old, who made his Premier League debut at Huddersfield Town back in December and played three games in each of the FA Cup and the EFL Cup.
All this while playing for the under-23 side in the Premier League 2, the under-21s in the EFL Trophy and the under-19s in the UEFA Youth League.
Ethan Ampadu (centre) listens to Sarri speak during Chelsea's training session
Ampadu also made his senior international debut for Wales in their friendlies against France and Panama last November.
Further strides are expected this season and it remains to be seen whether Sarri keeps him with the squad or loans him out for experience.
The fact Ampadu is young enough to play across all age groups suggests there will be plenty of minutes for him at Chelsea for the time being.
Quick, athletic and comfortable with the ball at his feet, Ampadu has also proved he has maturity beyond his years by effortlessly stepping up to the first team.
His desire to make further breakthroughs this season was shown by the fact he returned to pre-season training earlier than most of his colleagues.
The 17-year-old defender made seven first-team appearances for the Blues last season
21, attacking midfielder, seven first team appearances
Loan spells at Real Betis and Celtic
Belgian Musonda has been training with the Chelsea squad in recent days after returning from what proved to be a disappointing loan spell at Scottish champions Celtic.
The loan, which started back in January and was meant to be 18 months in length, was terminated in May after Musonda played just eight matches for the Glasgow club.
The 21-year-old, who can play either as an attacking midfielder or a winger, had been given first-team opportunities by Conte in the opening half of the season.
Charly Musonda (centre) has returned to Chelsea following an early end to his loan at Celtic
Players already sent out on loan ahead of the season:
Nathan Baxter (Yeovil Town), Jamal Blackman (Leeds United), Eduaro (Vitesse), Trevoh Chalobah (Ipswich Town), Jake Clarke-Salter (Vitesse), Reece James (Wigan Athletic), Baba Rahman (Schalke), Dujon Sterling (Coventry City), Kyle Scott (Telstar), Lewis Baker (Leeds United), Danilo Pantic (Partizan), Ruben Sammut (Vitesse), Kenedy (Newcastle United), Joao Rodriguez (Tenerife)
He was thrilled to score his first goals for the club in the 5-1 EFL Cup win over Nottingham Forest last September and had also been handed a Premier League debut.
Musonda has been at Chelsea since 2012, so a grand total of seven first-team appearances, mainly from the bench, isn't too much to show.
Even the two years he spent on loan with Real Betis in La Liga yielded just 24 appearances and Musonda has played in just 39 matches at the elite level over four seasons.
There's no question the tricky and speedy Belgian has potential, but there have been reports that the trappings of fame and fortune so young have affected him.
Back with the Chelsea squad and handed the No 17 shirt, Musonda is at a critical moment in his career and knows he must impress Sarri during pre-season, where he should get plenty of opportunities.
Musonda celebrates after scoring his first goal for Chelsea against Nottingham Forest last year
20, striker, two first-team appearances
Loan spells at Bristol City and Swansea
The most established of the five youngsters on tour, Abraham's early-season form on loan at Swansea earned him a call-up to the England senior squad in November.
Abraham scored four in his first eight Premier League appearances for Swansea last campaign but the goals soon dried up for the 6ft 3ins frontman, with just one additional strike after October.
The striker made his England debut alongside Ruben Loftus-Cheek back in November against Germany, but unlike his Chelsea team-mate, failed to make Gareth Southgate's 23-man World Cup squad.
Tammy Abraham (right) with Alvaro Morata - who he will compete with to earn a starting spot
Abraham spent last season on loan at Swansea scoring five goals in 31 league apperances
Now 20 and with only two Chelsea appearances to his name, Abraham will be hoping to finally make an impression on the first-team picture under Sarri.
Abraham could be set for another loan spell away from Stamford Bridge or a regular place among the substitutes particularly if Gonzalo Higuain joins from Juventus.
Anything other than a loan to a top-flight side would be a step down for Abraham, who spent the 2016-17 season with Bristol City in the Championship before his spell in south Wales the following campaign.
Abraham can seek motivation from Loftus-Cheek, who forced his way into England's World Cup squad based on his performances at Crystal Palace last season.
21, right-back, six first-team appearances
Loan spell at Hull
Right-back Aina, who has been with Chelsea since the age of 11, also spent last season riding the learning curve of ups and downs while on loan at Hull City.
The 21-year-old actually gained more experience in the Championship than Tomori, playing in 44 of Hull's 46 league matches plus two more in the FA Cup.
It was enough for him to be named in Nigeria's 30-man provisional squad for the World Cup, but he didn't make the final cut.
Ola Aina in action for Chelsea during their pre-season tour of the United States back in 2016
For the moment, there seems to be no indication that Aina will once again be loaned out and he is a part of Sarri's first-team squad with a chance to make his mark in pre-season.
A converted winger, Aina possesses plenty of pace and so is well-suited to the demands of the modern game and the approach Sarri likes to go with.
He is another who enjoyed extensive success while in Chelsea's academy, with his only first-team exposure so far coming in Conte's first season in charge.
Aina played a few minutes in the Premier League, but featured against lower league opposition in the FA Cup and the EFL Cup, as many youngsters do.
With a season of useful Championship experience now under his belt and the slate cleaned under Sarri, Aina will hope to stake his claim.
Aina trips West Ham's Edimilson Fernandes during Chelsea's 2016 EFL Cup tie
17, striker, four first-team appearances
Chelsea's academy teams usually have a reliable goalscorer within their ranks and 17-year-old Callum Hudson-Odoi is the latest to catch the eye.
Hudson-Odoi was used across five different age groups by Chelsea last season, from the under-18s to the first-team, while also winning the Under-17 World Cup with England.
Conte gave him first-team experience in two Premier League and two FA Cup fixtures, while he played regularly for the under-21s in the EFL Trophy, scoring four times on their run to the semi-finals.
Callum Hudson-Odoi speaks to new manager Sarri during Monday's training session
There's no question Hudson-Odoi will be on Sarri's radar as he was Conte's and further first-team opportunities are surely inevitable for the teenager.
Given the fact the striker doesn't turn 18 until November, there seems little chance of a loan at this stage because he can usefully be used across a number of age groups.
The important thing is that Hudson-Odoi continues to score goals at the various levels and further exciting opportunities will certainly follow.
Time is most definitely on his side and those within the Chelsea academy are rightly very excited about his potential.
Hudson-Odoi celebrates scoring Chelsea's fourth goal in their Youth Cup final win at Arsenal