Adam O'Brien could be in line for his Bulls debut after being named in the 19-man squad for Sunday's trip to Huddersfield.

The 17-year-old hooker could be used to support Matt Diskin off the bench, with regular No 9 Heath L'Estrange sidelined by an ankle injury.

Danny Addy performed the role in last week's win against Huddersfield but he featured at stand-off for the under-20s last night, suggesting he is unlikely to play for the first team as well.

Bulls' 19-man squad: Danny Addy, Shaun Ainscough, Patrick Ah Van, Adam O’Brien, Matt Diskin, Olivier Elima, Bryn Hargreaves, Marc Herbert, Brett Kearney, Craig Kopczak, Andy Lynch, Tom Olbison, Michael Platt, Gareth Raynor, Shad Royston, Nick Scruton, Ian Sibbit, Paul Sykes, Elliott Whitehead.