Barcelona look set to face a weakened Dynamo Kiev side in their third Champions League group game on Wednesday at the Camp Nou.
Catalunya Radio and Sport both reported the visitors could have up to 11 first-team players missing for the game mostly because of coronavirus.
The club subsequently confirmed in a statement that six players, Georgy Tsitaishvili, Denis Garmash, Mikkel Duelund, Alexander Karavaev, Tudor Belutse and Mykola Shaparenko, have all tested positive.
Assistant head coach Emil Karas has also tested positive along with four other staff members.