Adam O'Brien has been included in the Bulls' 19-man squad for Saturday's Super League home clash with St Helens.
The highly-rated young hooker replaces Michael Platt in the only change to squad which defeated Castleford Tigers last weekend.
O'Brien has been playing for Dewsbury in the Championship and could yet turn out for them again this weekend.
Chev Walker and Jamie Langley have been named in the squad and coach Francis Cummins expects them to be passed fit to play, meaning the Bulls could be unchanged.
Bulls squad: James Donaldson, Adam Sidlow, Adam O'Brien, Manase Manuokafoa, Jamie Langley, Matt Diskin, Brett Kearney, Nick Scruton, Heath L’Estrange, Matty Blythe, Keith Lulia, Elliot Whitehead, Elliot Kear, Jarrod Sammut, Danny Addy, Tom Olbison, Chev Walker, Jobe Murphy, Jamie Foster