Aug 8 (Reuters) - Chelsea's new signing Christopher Nkunku is set to be sidelined for an "extended period" after the French forward underwent surgery for a knee injury, the Premier League club said on Tuesday.
The French forward went down clutching his leg after a challenge in the ninth minute of the 1-1 draw with Borussia Dortmund in a pre-season friendly in Chicago.
Nkunku, who was signed for close to 60 million pounds ($76.32 million), came off midway through the first half in discomfort.
"Nkunku has sustained a knee injury which will rule the forward out for an extended period," the club said in a statement.
($1 = 0.7862 pounds)Reporting by Rohith Nair in Bengaluru; Editing by Christian RadnedgeOur Standards: The Thomson Reuters Trust Principles.
Persons:
Christopher Nkunku, Nkunku, Mauricio Pochettino, Rohith Nair, Christian Radnedge
Organizations:
Premier League, Borussia Dortmund, London, RB Leipzig, Thomson
Locations:
French, Chicago, Bengaluru