Manager Sam Allardyce is concerned at the extent of Givet's injury and is awaiting news.
"He fell on his knee, we aren't sure of the extent of the damage yet," he told the club's official website.
"But it is a little worrying that it isn't a kick so he may have twisted or tweaked a ligament."
Should the injury be ligament related, the French international could be sidelined for several months.
Mark Seabourne, Goal.com UK