Borussia Dortmund coach Jurgen Klopp on Thursday raised fears expressed by a growing number of European clubs about African players being exposed to the risk of Ebola contamination while on international duty.
One Spanish club has already brought back a Guinean international from Cup of Nations duty and AC Milan were forced to deny at the weekend that Ghanaian international Michael Essien had Ebola.
With the Ebola death toll in West Africa now at nearly 4,500, hosts Morocco have called for the Cup of Nations to be postponed. But the Confederaton of African Football (CAF) has insisted that the tournament must start as planned on January 17.
"The fact is that I wonder a lot about this subject," said Klopp. "When a country has the feeling that it cannot find the right solution we should be worried.
"We don't have the right to close our eyes and say: 'we are going to carry on as normal'."