"It would be very disappointing for him to miss it, he is obviously a very great mate of mine," Thurston said.
"But it is out of my control we will have to wait and see."
Thurston left AAMI Park 10 minutes early on Saturday night due to a calf injury with a preliminary final victory over Melbourne secure.
The superstar pivot has struggled with a groin injury over the last month and it again affected his usually faultless goalkicking in the 32-12 win over Storm.
But Thurston downplayed any concerns over his fitness.
"The body is fine, I'm all good," he said.
"This week now is just all about getting the body right and preparing the best way possible.
"It is going to be an exciting week."
Guerra is expected to give evidence in favour of Hodges at the judiciary.
South Sydney hooker Issac Luke missed last year's decider through a dangerous throw suspension.
-AAP