Poor is a relative term so I don't see how anyone can answer this question.
Not me. If we had no other option then you never know, he could do a good job but I wouldn't want to bet on it.
We never know for certain what goes on behind the scenes but it seems like a safe assumption. A guy who's never been paid a lot being offered a contract that sets him up for life, I think it seems like 99% yes he would be willing to sign. But if you can think of a reason that he would be unwilling to sign at all, I'd love to hear it.
As far as reasonable price goes, sure that's always an issue. But if he was deemed to be someone who will not sign for a reasonable price, maybe they should have decided at that point to go in another direction. If he's not reasonable today, why would he be reasonable tomorrow especially then tomorrow he has much more leverage? Who knows what happened but I sure hope Dubas wasn't trying to nickel and dime him, I would have been willing to overpay him to keep him myself, not "infinitely" overpay to borrow your term but overpay him somewhat, sure.