United will now have to do without Casemiro for their next three matches.
The club are already without Christian Eriksen, who has been ruled out until late April or early May after being forced out of their recent 3-1 win over Reading.
Donny van de Beek is sidelined through injury until the end of the season.
And United are also currently without Scott McTominay, too.
As a result, Sabitzer is likely to step up for the Red Devils following his arrival from Bayern Munich last month.
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