Bradford Bulls have snapped up the twin brothers of new Great Britain international Sam Burgess.
Prop forwards Thomas and George Burgess, who turn 16 in April, have come through Leeds' scholarship scheme but have turned down the Rhinos and signed three-year deals with their arch rivals.
"I'm over the moon they've signed for Bradford and proud as punch for them both," said Sam Burgess.
"They've been given an opportunity and now it's down to them.
"From what I've seen, I'm pretty sure they've got the right dedication to do that and hopefully they'll join me in the Bulls first team one day. That would be the ultimate goal - to all play together at Bradford."
Bradford coach Steve McNamara believes the Dewsbury Moor duo, who already tip the scales at 16 stone, can make as big an impact as their older brother, who was Super League's Young Player of the Year in 2007 and made a tryscoring debut for Great Britain.
McNamara said: "They are two huge boys with great potential.
"I think of all the young players we're signing this year, these two have the biggest areas of improvement left in them.
"They are big, raw-boned lads and it's pretty scary to think what they could turn in to."
Eldest brother Luke is a prop at Leeds, while their father Mark played for Hunslet and Dewsbury before his tragic early death last year.
Great Britain forward Adrian Morley will captain Warrington this year following the surprise decision by Lee Briers to step down from the role.
Briers, 29, who is coming to the end of his testimonial year, has led the Wolves for the last five years but will now concentrate solely on his football.
"I felt going forward that we needed to take the pressure off Briers, both on and off the field," explained coach Paul Cullen.
"The bottom line is I want him to turn up for work with a smile on his face to play football and have the responsibility for that and that only."
Morley, 30, who is starting his second season at the Halliwell Jones Stadium, captained Great Britain against France last June.