Raja Casablanca's Champions League semi-final on Sunday against Zamalek in Cairo is in doubt after more players from the Moroccan champions tested positive for Covid-19.
Last week, the Confederation of African Football (Caf) postponed the second leg by a week after eight Raja players reported positive for Coronavirus.
After another round of testing on Tuesday, the number of positive cases now stands at 14.
Six Raja players will undergo re-tests on Wednesday, with the whole squad having another round on Thursday.
Caf's Head of Communications said talks are ongoing with Egyptian authorities, who have separately expressed concerns about the timing of both the semi-final and final (on 6 November) because of parliamentary elections in Egypt.
"We are discussing with them to find a better solution," Alex Siewe told BBC Sport Africa.
Caf has already allowed Raja to add three players from their youth team to join the travelling party, which is set to leave for Egypt on Friday.
The Moroccan champions lost 1-0 to Zamalek in the first leg in Casablanca earlier this month and are battling to meet another Egyptian side, Al Ahly, in next month's final.