Emmanuel Emegha will miss the first leg of Chelsea's tour to Australia having picked up an injury in a friendly, talkSPORT understands.
Emegha sustained a hamstring issue during the Blues' 3-0 win over League One side Bromley, which was played behind closed doors.
Emanuel Emegha celebrates scoring for Strasbourg
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Emegha's Chelsea career has got off to a tricky startCredit: AFP
The Dutch international was subsequently not included in the Chelsea squad bound for pre-season games in Australia and Asia.
Another notable absentee from the travelling party was Geovany Quneda, who has a minor fitness issue.
It's a cruel start to life for the duo, who both officially joined Chelsea this summer.
Emegha arrived from the Blues' sister club Strasbourg on the back of a season where he scored eight goals in 18 matches across all competitions.
However, the 23-year-old struggled with his fitness in the 2025/26 campaign as he missed a total of 33 matches for Strasbourg with injury.
Chelsea beat Manchester United to Quenda in March last year, although the transfer would not take place until this summer.
The 19-year-old arrived at Stamford Bridge on an eight-year deal, with the Blues understood to have paid an estimated £42m to prise him away from Sporting.
Emegha and Quenda's respective additions continue what has been a hectic summer for the Blues.
Chelsea unafraid to splash the cash
Overseen by new manager Xabi Alonso, who was appointed in May, Chelsea have already spent upwards of £200m.
The headline act of the west London outfit's summer spending to date is Morgan Rogers, who joined from Aston Villa for an eye-watering £117m.
Chelsea unveil Morgan Rogers from Aston Villa
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Despite signing for the Blues, Rogers won't be on their pre-season trip as he gets an extended break after the World CupCredit: Getty
Chelsea's travelling squad for pre-season
Goalkeepers: Filip Jorgensen,Robert Sanchez, Ted Curd,Teddy Sharman-Lowe
Defenders: Josh Acheampong,Tosin Adarabioyo,Aaron Anselmino,Levi Colwill,Wesley Fofana,Jorrel Hato, Marco Palestra,Mamadou Sarr, Tayo Subuloye
Midfielders: Landon Emenalo,Dario Essugo,Omari Kellyman,Romeo Lavia, Madhi Nicoll-Jazuli,Reggie Walsh, Reggie Watson
Forwards: Liam Delap,Jamie Gittens,Ryan Kavuma-McQueen,Cole Palmer,Joao Pedro, Dastan Satpeyev,Estevao Willian
Rogers' transfer fee made him the most expensive British player of all time.
Chelsea were also convinced to part with £47m for Italy international Marco Palestra.
Palestra initially seemed destined to join Inter Milan from Atalanta, but Chelsea pipped the Serie A champions to the post.
Chelsea's expenditure to date has been aided by a string of major outgoings.
Midfielder Andrey Santos made the switch to Manchester United for £50m while Marc Cucurella, who helped Spain win the World Cup, joined Real Madrid for an initial £47.5m.
The Blues also have got winger Alejandro Garnacho off their books as Aston Villa recruited him on a season-long loan with a conditional obligation to buy.