Jose Mourinho has revealed that Oscar is his only injury concern ahead of Chelsea's trip to Manchester City, with first-choice goalkeeper Thibaut Courtois also set to miss the match after being sent off during a disappointing draw against Swansea last weekend.
The reigning Premier League champions travel to the north west on 16 August after an eventful few days, during which their manager has been repeatedly criticised for his questionable conduct towards the club's head doctor Eva Carneiro and firstteam physiotherapist Jon Fearn during the2-2 stalemate.
The duo were berated by Mourinho following their decision to rush onto the pitch after a heavy challenge on Eden Hazard left Chelsea momentarily down to nine men. The pair have subsequently lost their respective places on the bench for the visit to the Etihad Stadium.
As well as addressing that particular controversy with a pre-prepared statement at his weekly press conference, Mourinho also revealed the latest team news ahead of the first match of the season between two sides expected to feature in the title race.
"Oscar is a doubt, he had a little injury in training. Courtois is suspended, apart from that it's all good," he told the assembled media as quoted by Chelsea's official Twitter account.
Brazilian international Oscar, linked sporadically with a possible move to Serie A champions Juventus over the summer, notched the opening goal against Swansea at Stamford Bridge, deceiving Lukasz Fabianski with a low, whipped free kick that evaded everyone in the penalty area before nestling neatly in the bottom corner.
The 23 year old does have a history of injury trouble, however. Having sustained a concussion following a nasty collision with David Ospina during Chelsea's goalless draw away to Arsenal in April, he was omitted from his country's squad for their 2015 Copa America campaign in Chile due to a thigh injury picked up in training.
Involvement at the 2011 Copa, London Olympics, Confederations Cup and 2014 World Cup have made it difficult for Oscar to get sufficient rest over the last few years and he also required treatment in the early stages of the game against Swansea after coming off second best from a seemingly innocuous clash with Ki Sung-Yueng.
Courtois will definitely miss the game after an ill-conceived appeal against the red card issued by referee Michael Oliver following a late foul on Bafetimbi Gomis was swiftly rejected by the FA. Former Stoke number one Asmir Begovic will continue to deputise.
City began their latest top-flight campaign with a comprehensive 3-0 victory over West Brom, secured courtesy of goals from David Silva, Yaya Toure and Vincent Kompany. Manuel Pellegrini has confirmed that he will be without midfielders Fernando and Fabian Delph for the visit of Chelsea, with a late decision set to be made on Gael Clichy after he trained with the squad this week in the aftermath of an ankle problem.
Sergio Aguero was introduced as a second-half substitute at The Hawthorns and admits he is unsure if he will be called upon to start, having commenced pre-season training late owing to Argentina's run to the Copa America final.