Nottingham Tiger has plenty of form for inaccurate legal advice he claims absolute knowledge of and accepts no challenge.
It is simply not true to say that once someone resigns they're contract has ended. It hasn't ended until the end of the notice period at the earliest unless the employer accepts it.
If NT was right then things like gardening leave and rules about public employees (as an eg) not working for certain organisations for a set period after resigning from their role wouldn't be legal. Anyone can quit their job and start a new one tomorrow regardless of notice. It would always be up to the former employer to sue for breach of contract
And that's before the point about registration. As others have hinted at these things work by mutual consent. If employers and employees flout them fixing it is a difficult and costly process that many, on both side, don't pursue
Never quite as black and white as the tiger makes out

I know what you mean. He's a great finisher as long as he catches the ball. Very hard to stop from 10 metres out but needs good service and is dodgy under high balls and inaccurate passes. When we (Salford) play Cas it looks like all they have to do is give him the ball and he'll score every time. More so than much better players. But I think he'd be ground out if he joined Wigan, Leeds, saints. He's a mid to lower table player I think

You're aware that Fages resignation was rejected by Salford? Hence the tribunal that will be taking place in the next few weeks to determine whether or not there was a breach. If the tribunal are in favour of Salford, his registration is still ours to swap - if Theo wins, he's a free agent but again due to his age Salford will receive a fee set by the tribunal.

Theo cannot sign for any other club until the outcome of the tribunal. Why do you think no club has made an offer to Salford for him since being transfer listed? Clubs were aware of what his agent was going to do, ie resign and go to tribunal (with a strong case).

Sporting contracts are usually for a fixed term. That's the difference. To end it early, either agree a payoff settlement or else claim the other party has committed a big enough breach that it entitles you to treat the contract as at an end, and you choose to do so.

The use of "resign" is just sloppy use of language. you can tender your resignation, and if the other party ACCEPTS your resignation then cool, but if they don't, then you DIDN'T resign. You offered your resignation but your offer was rejected. So you remain under contract and you'll have to come up with something else.

if he leaves cas then he'll probably end up at catalans, i'm sure they still have some young frenchmen to replace yet!

We've taken on our fair share of f***wits for Care in the RL Community. Someone else should have to take him.

People are saying, he'll probably go back to the NRL. Frankly, if NRL clubs were queuing up for him, what's he doing in SL in the first place? I don't think he's all that either. He takes some stopping from close range, but so do most wingers. And plenty have more to their game than Carney. I was surprised to see him making people's Dream Team on that thread.

He will then become the bestest Winger in the whole wide world in the eyes of a certain faux Frenchman...

Are there any more Carneys? Perhaps with Tod & Justin Cats could go on to recruit a full side of them?

Going by what some are saying

Yes. Mrs Massey has just had a baby and they are saying it's Carneys

If the tribunal finds in Fages favour then I can't see how a fee could go to Salford. I know clubs get a standard compensation for players under a certain age but that's only with certain conditions met. I can't imagine losing a constructive dismissal tribunal would lead to Salford being eligible for a fee.