They are replaced in the nineteen by Mike McMeekan, who will be making his first team debut if involved, and Michael Channing.
Jason Golden picked up a back injury whilst playing for the U20s last week and is replaced by Ben Bolger.
Dan Sarginson is making progress as he continues his recovery from an ankle injury however it is uncertain when he will be fit enough to return to action.
Liam Colbon and Matt Cook remain sidelined with respective shoulder and ligament injuries.
Broncos interim head coach Tony Rea commented: "We've had an extended week at training with an extra day in the turnaround which has been helpful.
"We've got some good miles done in preparation for getting to start line."
Broncos Squad:
12 Chris Bailey
22 Ben Bolger
10 Mark Bryant
23 Omari Caro
28 Michael Channing
13 Tony Clubb
21 Kieran Dixon
1 Luke Dorn
7 Craig Gower
4 David Howell
8 Antonio Kaufusi
18 Olsi Krasniqi
32 Mike McMeekan
16 Chris Melling
3 Jamie O'Callaghan
9 Chad Randall
14 Julien Rinaldi
30 Scott Wheeldon
6 Michael Witt
