Celtic’s Hatem Abd Elhamed has tested positive for Covid-19 while on international duty.
The defender fell ill after playing for Israel against the Czech Republic on Sunday, just days after team-mate Nir Bitton’s positive result.
It means the pair will miss Saturday’s Old Firm match against Rangers along with James Forrest and Ryan Christie.
Elhamed, 29, will now have to self-isolate for 13 days before returning to training.
Odsonne Edouard also tested positive last week while on under-21 duty with France and the striker’s period of self-isolation could make it difficult for him to be ready in time for the weekend.
“We are, of course, disappointed and frustrated that another player on international duty has tested positive – during an international period which is continuing to present huge challenges for the club,” said a Celtic statement.
“While Fifa regulations determine that clubs are obliged to release players for international duty, going forward we are sure wider discussions will take place around this hugely important issue. We will monitor these discussions closely.”