Rangers striker Fashion Sakala has tested positive for Covid while on international duty.
The Zambia cap was due to line up for Zambia in their friendlies against Congo and Turkey this week, but has been pulled from the squad.
Rangers will now be concerned over any Covid red-tape that could see the forward miss out on the crucial derby showdown with Celtic.
Gio van Bronckhorst will be hopeful that Sakala is ready to face Ange Postecoglou’s side when they visit Ibrox on 3 April with the forward entering self-isolation.
The Zambian FA statement read: "Scotland based striker Fashion Sakala has been ruled out of the international friendly matches lined up during the FIFA window after testing positive for Covid-19.
"Sakala who is on the books of Glasgow Rangers was part of the 23 member squad named by Chipolopolo coach Aljosa Asanovic for Friday’s match against Congo-Brazzaville will be in quarantine for seven days.
"FAZ General Secretary Adrian Kashala says the Association has written to Glasgow Rangers on the players’ status and was awaiting formal correspondence.
"Sakala was scheduled to travel directly to Antalya for the Chipolopolo outing but has since been ruled after the Covid-19 results came out positive."