Brett Kearney comes into the side but Langley has not recovered from an ankle injury and L’Estrange is missing with a slight ankle strain.
James Donaldson is set make his first appearance since rupturing his Cruciate Ligament at Castleford last February.
Leeds boss Brian McDermott has named his strongest possible side, with recent Golden Boot winner and England Captain Kevin Sinfield, as well as new signings Joe Vickey and Joel Moon all included in his starting line-up.
The referee is Oldham's Robert Hicks.
Bulls squad: Foster, Kear, Blythe, Lulia, Platt, Kearney, Sammut, Scruton, Diskin, Manuokafoa, Olbison, Whitehead, Walker, Sidlow, O’Brien, Murphy, Addy, Donaldson