Mateo Kovacic is likely to make his Chelsea debut off the bench when Arsenal visit Stamford Bridge in the Premier League on Saturday.
The Croatia midfielder was not involved in last weekend's 3-0 win at Huddersfield Town after signing on loan from Real Madrid on deadline day.
Cesc Fabregas also sat out the opening weekend and will miss the Arsenal match with a minor, "unusual" injury close to his knee.
His unavailability coupled with the midweek loan departure of Tiemoue Bakayoko to AC Milan means Maurizio Sarri is set to call on Kovacic.
"I think Mateo will be very useful for us. He's a very technical player," Sarri told reporters.
"In this moment he has to work. I think he's not ready now for 90 minutes, but maybe tomorrow for 30 minutes he could be used.
"I think he can play in any of the three positions in midfield. He's a very good offensive player, but he has improved in the defensive phase in the last two years in Madrid.
"I expect a lot from him because, for me, he's a very great player. In my opinion, he can improve more."
88% - Among players to attempt 30+ dribbles in La Liga in 2017-18, Mateo Kovacic's 88% dribble success rate was the best of any player in the competition. Talent. pic.twitter.com/kK0N3zOeuc— OptaJoe (@OptaJoe) August 9, 2018
Alvaro Morata appears set to hold his place despite an underwhelming display against Huddersfield.
The striker, who netted 11 league goals last season, has the backing of his head coach to find form.
"I am not worried about Morata. Morata is a very great player," Sarri said. "I think that, in this moment, he needs only to gain confidence.
"He needs to score as all the strikers in the world do. He needs to gain confidence, but he's improving so I'm not really worried about him."
|Jordan goalkeeper scores from own penalty area in friendly against India|
|Pollard leads Springboks to Murrayfield victory|
|Fired-up Japan taught England a great lesson - Jones|
|Sarries leave it late to down Sale, Bath and Saints win|
|O´Shea fumes at disallowed Italy try|
|Southgate welcomes England selection quandary|
|Reaching Rooney´s England goals record ´definitely possible´ – Kane|
|Debut try for Cokanasiga as England rally to avoid Japan upset|
|Wembley will galvanise ´tired´ Croatia, insists Dalic|
|Zverev apologises for tie-break controversy amid O2 Arena heckles|
|Marquez happy with fifth after damaging shoulder in Valencia|
|Wales crush Tonga in Cardiff|
|Germany should keep faith in old guard - Bierhoff|
|Injured Lukaku to miss Belgium´s Nations League decider|
|Zverev knocks out Federer to reach maiden ATP Finals showpiece|
|Koroibete double maintains Australia´s 100 per cent record against Italy|
|Juventus´ Khedira sprains ankle in training|
|Van Dijk: Ramos is not my type of defender|
|Vinales grabs Valencia pole as Marquez crashes|
|I don´t deserve Ballon d´Or, Mbappe does – Hazard|
|Reed and Willett share lead in Dubai|
|Romagnoli joins long AC Milan injury list|
|Williamson steadies Black Caps after Boult heroics|
|Griezmann targets swift French response against Uruguay|
|Havertz´s future lies with Bayer Leverkusen – sporting director Boldt|
|Socceroos boss Arnold excited for future|
|South Africa triumph on Gold Coast in truncated T20 clash|
|Germany without Draxler for Netherlands game|
|Barcelona confirm Rakitic hamstring injury|
|Rain halts England´s post-tea flourish|
|Australia 1 South Korea 1: Luongo seals late draw for Socceroos|
|Irving thrives on ´peace´ of being in the zone|
|Lloris admits France could have lost by more|
|Dybala impressed by Argentina´s improved spirit|
|Arsenal chief confirms Super League talks|
|Hooker knocks out Saucedo to retain WBO strap|
|NBA wrap: Kyrie Irving sizzles as Celtics beat Raptors in overtime|
|Jimmy Butler aims dig at Timberwolves following 76ers home debut|
|Koeman surprised by dominant Netherlands|
|Southgate rallies England ahead of Nations League decider|
|Chile 2 Costa Rica 3: Waston brace sinks La Roja|
|Tite inspired by Guardiola´s City|
|Argentina 2 Mexico 0: Funes Mori´s header helps to sink El Tri|
|Lovren ready for ´fiery´ England clash|
|Brazil captain Neymar pleased with stern Uruguay test|
|Ravens´ Flacco doubtful, Jackson could start|
|Richarlison: I want to be at the Copa America|
|Tabarez buoyed by inexperienced Uruguay|
|Howell fires 64 again to extend RSM Classic lead|
|I´m proud of them - Giggs still upbeat despite Denmark defeat|
|Mancini ´very sorry´ for Ronaldo absence|
|Neymar clinches anything-but-friendly win for Brazil over Uruguay|
|Cipriani-inspired Gloucester thrash Tigers|
|Djokovic makes it three wins from three at ATP Finals|
|Germany relegated from Nations League top tier to cap miserable 2018|
|Fulham will back Ranieri in January transfer window if required|
|Brazil 1 Uruguay 0: Neymar penalty settles tight contest|
|Netherlands 2 France 0: Wijnaldum & Depay decisive as Germany are relegated|
|Wales 1 Denmark 2: Jorgensen and Braithwaite seal Nations League promotion|
|Oxlade-Chamberlain targeting early return|
|New Zealand-born Aki will ´relish´ facing All Blacks – Marmion|
|Portugal cannot focus on absent Ronaldo - Santos|
|Ramsey reiterates he wants to stay with Jaguars despite cryptic tweet|
|We tried to hit a home run and it didn´t work out - D´Antoni explains Carmelo exit|
|West Ham´s Zabaleta backs Premier League´s VAR introduction|
|Southgate eyes winning end to England´s ´brilliant year´|
|Patient Zverev seizes opportunity to make amends at ATP Finals|
|Rodgers: Packers still believe they can make playoffs|
|Mahomes hoping to ketchup to Heinz´s touchdown target|
|Ranieri tells Fulham fans not to expect repeat of Leicester ´fairytale´|