Dundee's squad has been impacted by Covid with half a team out of the clash with Motherwell.
Mark McGhee is facing a massive selection headache as he prepares to face off against his former side in the battle for Premiership survival.
At least five key Dundee players are already out and it could be six. There will also be further tests on Saturday morning.
A club statement read: "Dundee Football Club can confirm that our scheduled Covid-19 testing this week has returned two positive tests.
"The first positive case earlier this week led to five players being identified as close contacts and as a result, some members of the squad missed out against Hibernian due to isolation periods.
"Testing ahead of tomorrow’s match at Fir Park has returned another positive case and as a result, a further five players have been identified as close contacts and some further players will have to isolate as a result.
"The club is cooperating fully with the appropriate authorities."
