The question is, who is there available to replace Costigan?

Personally, I'd like to see a ball-handling forward (loose or 2nd row), not a fifth prop, which would fit in with Chester's off-the-cuff offense.

Would it be worth a punt to sound out Saints about Jon Wilkins availability?

no

Why is it a crazy idea.

Jon is 31 and has a shelf life of 2-3yrs. He would bring enormous experience with him.

Past his best and injury prone.

Strong rumors that he will join Clint Newton as a senior player in the Knights reserve grade side.

Who? Wilkin?

Costigan.

Costigan signed for new Queensland cup side Townsville Blackhawks.
I think he is from Townsville, so going home to finish his career.

What's the deal with that? Was I right in thinking his playing registration had to be paid towards Rovers if any contract was offered to him?