Castleford Tigers sign half-back Cory Aston after he was allowed to leave Super League rivals Leeds Rhinos.
Super League champions Leeds Rhinos will play NRL side Melbourne Storm in Australia in the 2018 World Club Challenge.
Champions Leeds Rhinos will start the defence of their Super League title at Warrington Wolves on 1 February, 2018.
Leeds Rhinos forward Stevie Ward says a shoulder injury made him consider his future in the game before their Grand Final win.
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Leeds back-rower Stevie Ward says Grand Final glory will help him cope after injury ruled him out of the World Cup.
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