I agree with Jemmo and Wanderer that Paul Cooke is probably favourite.
As Weighman pointed out he is "ex-top flight" which puts a question mark against it being him, along with the fact that the player concerned has been offered a contract by a Super League club for the coming season.
Which Super League club would have offered Paul Cooke a contract given that he has been out of the game for the last 12 months?
Kyle Briggs is a possible too, as Steve Roebuck mentioned. He ticks the boxes. I think Jamie Rooney would be more of an outsider.
It seems certain that it is a half back. This rules out Keith Senior and Clinton Schifcofski.
Given all the evidence I would make Paul Cooke the favourite at 11/8 but I don't think it's odds on that it is him.
Not long to wait now!