Goalkeeper Edouard Mendy has returned to Chelsea after injuring his right thigh while training with Senegal.
The 28-year-old joined the Blues on a five-year deal last month and kept a clean sheet on his Premier League debut against Crystal Palace.
Chelsea said Mendy “had a medical examination in a hospital in Rabat, where Senegal are due to play Morocco”. The club added: “Mendy has since returned to Chelsea where he will undergo further examinations.”
Senegal play Morocco in a friendly on Friday (19:00 BST kick-off).