MICHAEL Monaghan will miss Wolves' trip to Castleford on Saturday, kick off 5.45pm, after failing to recover from a shoulder injury.

The Australian scrum half picked up the knock in last week's 25-24 Challenge Cup quarter-final win at Hull KR and joins Paul Johnson on the sidelines.

Johnson is also suffering a shoulder problem and lost the race to be fit for Tigers despite hopes he could return.

Chris Hicks is included in the 19 after missing the last three games with a groin injury.

In Monaghan's absence, Lee Mitchell has been promoted to the 19-man squad.

Wolves' 19-man squad to face Castleford: Louis Anderson, Vinnie Anderson, Chris Bridge, Lee Briers, Garreth Carvell, Jon Clarke, Mike Cooper, Simon Grix, Ben Harrison, Chris Hicks, Mickey Higham, Matt King, Richie Mathers, Lee Mitchell, Adrian Morley, Paul Rauhihi, Chris Riley, Ben Westwood, Paul Wood.