Leeds have signed Rory Kettlewell, an 18-year-old scrum-half with a background in rugby union.
Kettlewell, originally from Ripon, was playing at Gloucester until trying his luck at Wigan at the end of last season. "Rory has been recognised by scouts as a player with outstanding potential and he excelled with Wigan last season," said the Rhinos' new coach, Brian McDermott.
"However, there were limited opportunities for him at Wigan and he will help us in our plans for the squad in the years to come. Although he is relatively new to rugby league, he has the base skills, like speed and elusiveness."
Kettlewell, a childhood Leeds supporter, has agreed a two-year contract. "I've been a Leeds fan since I was six, so to sign for the club is a great feeling," he said.
"Wigan's scouts spotted me when I was at school and kept in touch when I was as Gloucester. They invited me for a trial last year and I really enjoyed the opportunity to play rugby league. I enjoy the freedom to play and the chance to use your skills."
Leeds are surprisingly thin at scrum-half, with Rob Burrow the only player with substantial experience in the role.
Castleford have signed the Samoa international wing or centre, Willie Isa, from the Melbourne Storm on a one-year contract.