Mauricio Pochettino is hoping Christopher Nkunku has not suffered a serious knee injury after the Chelsea forward was substituted against Borussia Dortmund in pre-season.
Nkunku played just over 20 minutes of the 1-1 draw in Chicago, going down clutching his leg following a challenge, before being replaced by Mykhailo Mudryk.
"The doctors are checking him and I hope it is not a big issue," Pochettino told the club's official website. "He fell in the action which was maybe a penalty and he feels something in his knee but we hope it is nothing big.
"We hope he can be back quickly with the team. We need a few days to assess him."
Nkunku's pre-season highlights
Nkunku for the Blues 🎈🎈#PLSummerSeries pic.twitter.com/OaTeTF8cuL
— Premier League (@premierleague) August 2, 2023
Nkunku has enjoyed a fine start to his Chelsea career since joining from RB Leipzig this summer.
He has scored three times in pre-season, with two goals coming in the Premier League Summer Series, which Chelsea won.
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Chelsea start their 2023/24 Premier League season at home to Liverpool on Sunday 13 August.