Castleford move seven points clear at the top of Super League with a victory at Yorkshire rivals Leeds Rhinos.
Sale boss Steve Diamond says they were justified in signing Denny Solomona but Castleford believe the legal saga could happen again.
Defending champions Hull FC defeat Super League leaders Castleford Tigers to reach the Challenge Cup semi-finals.
Castleford Tigers accept a compensation payment "in excess of £200,000" for the transfer of Denny Solomona to Sale Sharks.
Audio & Video
Zak Hardaker scores a stunning solo try for Castleford against his parent club Leeds as they move seven points clear at the top of the Super League.
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