Hull KR are looking for a new coach after Martin Hall rejected the offer of a new contract at Craven Park. Hall, who joined the club in December, said he was leaving for "personal and family" reasons.
"It was essential that a decision was made now to allow the club to re-appoint and plan for an effective pre-season programe," he said.
Hall becomes the third high-profile departure after manager Malcolm Reilly and chief executive Nick Halafihi.