Force halfback Ryan Louwrens is out for the season.
Louwrens suffered a ruptured ACL last in last weeks’ loss to the Bulls.
He has been close to the Force's best player so far this season.
"I'm pretty biased but I think Ryan's the best nine, the form nine in Australia at the moment so it means a lot for us to have him," Force coach Dave Wessels said.
Meanwhile, Force skipper Ben McCalman could return this week against the Kings.