Jamie Jones-Buchanan says Gareth Ellis could hold the key to Saturday's against holders Hull.
Oliver Gildart will be playing for either England or Italy in the end of season World Cup, with his priority on the former.
Holders Hull edged closer to a second successive Wembley appearance after beating Castleford 32-24.
Sam Tomkins landed the decisive drop goal as Wigan edged out Warrington 27-26.
Leeds secured their place in the semi-finals of the Challenge Cup with a comfortable 58-0 victory over Featherstone.
Salford reached the Ladbrokes Challenge Cup semi-finals for the first time in 19 years with a 30-6 win over Wakefield.
Challenge Cup holders Hull FC face Castleford in a bid to keep the defence of their title on track.
Updates from the Challenge Cup where Salford booked their place in the semi-finals with a 30-6 win over Wakefield
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