Christopher Nkunku suffered an injury during a friendly and will miss the Premier League opener.
Chelsea faced Borussia Dortmund for their final pre-season game and played a 1-1 draw.
During the game, Nkunku suffered an injury and following the game, Mauricio Pochettino revealed that “he felt something in his knee”.
The Blues begin their Premier League season with a game against Liverpool at Stamford Bridge on August 13.
Following that game, Chelsea will face West Ham on August 20.
Chelsea’s upcoming games are as follows: