Widnes hooker Liam Carberry has been given a new 12-month contract by the club.
London Broncos' Scott Moore will miss a reunion with his old St Helens team-mates after accepting a one-match ban.
St Helens forward Jon Wilkin believes the Easter double-header should remain on the Super League schedule.
Wigan hooker Logan Tomkins will remain with Salford for the rest of the season.
Benji Marshall is clear to return to rugby league after being freed from his contract with the Auckland-based Blues.
Bradford have lost the services of forward Danny Bridge, who has been recalled by his parent club Warrington.
Widnes have handed prop forward Paul Johnson a new two-year contract.
Wigan prop forward Gil Dudson has been accused of a shoulder charge against Bradford Bulls on Monday.
Scott Moore of London Broncos and Wigan's Gil Dudson have been charged by the Rugby Football League Review Panel.
Widnes Vikings have confirmed prop Paul Johnson has signed a two-year extension with the high-flying Super League club.