Unless you've had a direct conversation with the coach or his agent, non of us know who and who wouldn't be interested. You can get someone interested if you're willing to write a big enough check.Is it unreasonable to ask for coaches who are both better and would be interested in the Purdue job if you want to replace Painter? One without the other doesn’t seem very useful.
But screaming "HE'D NEVER COME TO PURDUE!!" isn't an answer when a list is presented.