Chester made his Super League debut at 17 for Halifax
Hull KR have appointed former back-row Chris Chester as assistant coach after accepting Lee Crooks' resignation.
Crooks leaves after a year as Justin Morgan's number two at Craven Park.
Robins chairman Neil Hudgell told BBC Radio Humberside: "Chris has been a Super League player for 14 years and is highly experienced."
Chester, 30, was forced to retire last July after suffering a neck injury and has played for Halifax, Wigan, Hull FC and the Robins.
Crooks asked to be released from his three-year contract with the Red & Whites.
This chance has arisen and we've jumped at the chance of getting him back on board very quickly
Hull KR chairman Neil Hudgell
Hudgell said: "Lee asked for his release and, as a club, we're not going to stand in his way. If he doesn't want to work for us then so be it. Things like this happen and I think the important thing is for us to move on."
Chester returns to Craven Park after a brief spell with Castleford on the academy coaching staff, and Hudgell is delighted to have him back at the club.
"We spoke to Chris at the end of last season and we wanted him to stay around in a coaching role but financially he had to secure himself some full-time employment," he said.
"This chance has arisen and we've jumped at the chance of getting him back on board very quickly."