Philippe Clement has revealed a bout of the flu is going around the Rangers training ground.
The Ibrox boss explained a virus has made its way around the building ahead of the Scottish Premiership match against Dundee.
However, Clement is not expecting any players to miss this weekend's match as a result of the seasonal bug.
And he confirmed no players have suffered fresh injuries from last weekend's Premier Sports Cup final against Celtic.
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He said: "There is some flu going around the building, but don't expect anyone missing.
"No fresh injuries from the last game."
Oscar Cortes will be included in the matchday squad but is not yet ready to start matches.
"Oscar Cortes will be in the squad," he said. "We will see about getting minutes - he is not there yet to start the game."