Iestyn Harris today admitted he is desperate to complete a treble and rule the world.

The countdown is now on towards the World Club Challenge when the Bulls collide with Aussie champions Wests Tigers at Galpharm Stadium.

For stand off Harris, so long a bridesmaid in terms of lifting trophies, the prospect of winning that prestigious title brings out his killer instinct.

"I won the Challenge Cup with Leeds seven years ago, now the Grand Final at Bradford and this will add to the collection," he said.

"It's something I've craved since the competition began and to be a part of a world champion side is something very special. We've got the opportunity to do it."

Speaking from the club's Lanzarote training camp, he believes the Bulls' current preparations will be vital towards success in the February 3 showdown.

"Wests will come here with a fired-up side expecting to win," insisted the Great Britain ace.

"That's why this week is so important for us. While we're in Lanzarote it's not only giving us a chance to gel together as a squad but it gives us great practice on good quality surfaces.

"The new players are settling in well and we're making the most of the conditions here.

"When we come back we'll be ready for a couple of pre-season friendlies and then we're firing all guns blazing for the World Club Challenge."

The Bulls return next Thursday ahead of their first hit-out at Huddersfield on January 22. Then comes Robbie Paul's testimonial with Hull KR before the real deal of Wests Tigers.