Canberra fullback William Zillman has agreed to a four-year deal with NRL club Gold Coast.

Zillman, who is sidelined with a season-ending knee injury, said the lure of returning home to south-east Queensland was too good to refuse.

"I'm really excited about the prospect of joining the Titans and I've always had a desire to go home to Queensland and play in the NRL," the 21-year-old said on Monday.

"I sincerely want to thank all of the people at the Raiders and I think they understand that I really miss home and this is a great chance for me to go back to Queensland."

Titans coach John Cartwright said Zillman, who made his NRL debut in March 2006, would prove a valuable asset for the club, both on and off the field.

"William is an extremely versatile player with fantastic footwork and turn of speed," Cartwright said.

"The fact that he's as comfortable playing five-eighth as he is in the number one jersey makes him a great acquisition for the club."

The recruitment of Zillman throws into doubt the future of Preston Campbell as fullback.

Cartwright could be tempted to use the electrifying Campbell as a shock weapon off the bench in 2009 to take advantage of tiring opposition forwards.

Zillman represented the 2005 Junior Kangaroos and worked his way into the NRL through Canberra's Queensland Cup feeder club Souths-Logan Magpies.

He recently underwent his second knee reconstruction after suffering an injury in a round two match against Penrith.

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