Would you take White or Howland?
Howland is an upgrade over Martin, White is, well, he may or may not be an upgrade and will probably need some time to grow into the job.
Howland would be very similar to the Bruce Pearl hire. He is an established coach who can be had for cheap because of some serious baggage. If Howland has his crap together he would be the better choice by far.
White.
Howland is basically blackballed for reasons unknown. That's way too big of risk without knowing why/what is behind it.