Tom Burgess (picture) is set to team up with his brothers Sam, Luke and George at the South Sydney Rabbitohs in 2013.
Burgess will leave Bradford at the end of the current Super League campaign after agreeing to join his family in Australia.
Twin brother George has also signed a new two-year deal in Sydney after making his first grade debut for the Rabbitohs against the Bulldogs this season, while Sam and Luke are also under contract for the 2013 campaign.
Like George, Tom is also a prop - with the 20-year-old having appeared 44 times for the Bulls.
"We're really pleased to have secured the services of these two young front rowers," Rabbitohs head coach Michael Maguire told the club's official site.
"George has come a long way in my time with the club and was making the most of his first grade opportunities until an unfortunate injury struck.
"He's back training and is working hard to get back into shape and hopefully he can play a part in the remainder of our 2012 season.
"Thomas is another addition to our strong front row and will create further competition for spots which strengthens the club as a whole.
"It's very special to be able to bring the four brothers together here at the Rabbitohs.
"We value ourselves as a family-oriented cub and to have Sam, Luke, George and Thomas all with us next year is something very special for the club and the game."