From Amundson's perspective, if he considers financial self-interest, he should be interested in the team that is most likely to want him back next season and then possibly use early Bird rights to give him a contract that is more than the minimum.
The Knicks seem the most likely to overpay a scrub who does well, but they have to create a roster spot for him. So, it is probably best for Amundson to wait a bit and see if the Knicks want to make room for him.