SAINTS duo Martin Gleeson and Sean Long are available for selection in Sunday's Challenge Cup semi-final with Huddersfield Giants despite an ongoing investigation into betting allegations.

But both may still miss the game at Warrington's Halliwell Jones Stadium through injury.

Huddersfield chairman Ralph Rimmer has called for the pair to be suspended until the investigation is completed - something Saints and the RFL have both rejected.

But on Tuesday Saints' coach Ian Millward said both players were a concern ahead of Sunday's crunch clash at Warrington.

He said: "Sean has missed the last two games and not trained with us this week. So he is a worry as is Martin, who is troubled with his hand.

"I think Martin has a better chance.

"With Dominic Feaunati and Jon Wilkin suspended it leaves us a little short but the guys who came in on Friday performed well."

Millward has the option of switching Jason Hooper or Lee Gilmour to the centres with Mick Higham or Carl Forber, who made an impressive debut last week, able to cover at scrum half.

Huddersfield, now coached by Saints' former assistant Jon Sharp, have started the season well and should be a tough nut to crack.

The Giants have a rough, abrasive pack which lays the platform for the equally robust half backs Paul March and Brandon Costin to work off.

They also have bags of pace in Marcus St Hilaire, Hefin O'Hare, Stuart Donlan and Paul Reilly.

Former Saints packman Stuart Jones will have a few points to prove on Sunday, kick-off 3.15pm.

Saints released the versatile forward, who is currently enjoying a 12-month loan at the McAlpine, in order to accommodate new back rowers Lee Gilmour and Maurie Fa'asavalu.

Jones joined Huddersfield during the off-season and he has turned in some impressive displays.

Millward explained: "I am really pleased for Stuart. He has been playing really well.

"I recommended him to Jon as I thought it would be good for his development to play week in, week out. For too many years at Wigan he did not play regularly enough and that stifled him.

"He is an honest kid with a lot of ability. I know some people will ask why did we not put a clause in to stop him playing against us.

"But Huddersfield have taken over his full wage and expenses and one of the things they wanted in return was that he was available to play against St Helens."

Millward said he will monitor the progress of Jones and Tony Stewart at Salford to see if they will feature in Saints' plans for next term.