Ian Sibbit, Adam O'Brien, Shaun Ainscough, Phil Joseph and Tom
Olbison all return to the Bulls' 19-man squad for Monday's game against Castleford Tigers.
Sibbit has not played since damaging his shoulder at the Probiz Coliseum in round two, O'Brien has yet to feature for the first-team this season due to an ankle injury and Joseph is also fit after
an ankle problem.
Their return to fitness is a boost as Chev Walker, (ribs), Craig Kopczak, (ankle), Matt Diskin (shoulder), Elliot Kear (wrist) were all injured in the Magic Weekend game against Leeds.
Adrian Purtell is sidelined as he recovers from a heart attack and loose forward Jamie Langley misses out again due to an achilles injury.
Bulls squad: Ainscough, Addy, Bateman, Burgess, Elima, Gale, Hargreaves, Jeffries, Joseph, Kearney, L'Estrange, Lulia, Manuokafoa, O'Brien, Olbison, Platt, Pryce, Sibbit, Whitehead.