document: Solomona scored 40 tries in the 2016 season, including a record total of 40 in Super League.
  Tigers chairman Steve Gill said in October that the 23-year-old Samoan was not for sale and would be returning to the club on 7 November.
  BBC Sport understands Solomona has held talks with rugby union side Sale.
  The Premiership club declined to comment on the story.
summary: Castleford Tigers are to take legal action against winger Denny Solomona after he failed to return to the club for pre-season training.