The teenage halfback turned down several other clubs to agree a 12-month deal at the Shay after impressing for the Rhinos reserves, and was touted as a possible replacement for the departed Graham Holroyd.

But Moore has struggled with pre-season training, and medical investigations have now revealed a back problem.

"Part of our pre-season training is a very intensive testing programme for all our players, and this has highlighted a problem with Gareth's back," said Fax chief executive Graham Clay.

"It's been hampering his track work, and after discussing it with Leeds we agreed the best course of action is for him to return to Headingley and allow the Rhinos medical staff to supervise his treatment and recovery.

"We are disappointed for Gareth because he is very enthusiastic and desperately wants to play for Halifax.

" We haven't ruled out him coming back to us, but that will depend on how long he is sidelined for.

"It may take a few weeks, or it could be several months. Once we know that the coaching staff will decide whether there is a place in the squad for him or not.

"This shows that our player performance and monitoring systems are working. It's far better to spot problems at an early stage."

The 19-year-old, who can play in either half back position,was a regular starter in Leeds' under 21 side last term and has been a prolific points scorer at junior level for his home town club, though he has yet to make his first team bow for the Headingley outfit.

He was close to joining Fax in thge summer only to pick up a hand injury which put the move on hold.

The news is a blow for coach Matt Calland's plans but he still has the likes of Ben Black, Bob Beswick, Mick Govin and Dwayne Barker vying for the stand off spot.

FANS are reminded that the 2009 shirt launch takes place at Liquid nightclub on Friday, December 12.

Admission is free for season tickets holders, and £3 for everyone else. As well as the unveiling of the new home and away shirts, the club will announce players squad numbers and formally introduce all the new signings.

The club have also confirmed they are planning an official VIP supporters trip to their away fixture in Toulouse.

The package includes flying with the team from Manchester on Friday, July 17 and returning on the evening of Sunday, July 19t, plus two nights bed and breakfast at the team hotel.

As seats will be limited to just 50 places, anyone interested is asked to contact the club as soon as possible on 01422 342792.