Kerr doesn't care for Stat. It's well known. He drove him away from Phoenix and spent that season downing him as a liability while he was MVPing. He was right in the longer run regarding Amare's injuries, but he has to much historically invested in Amare failing. The only thing that changes that is if Phil says he staying and needs to play. Then Steve will back.
The whole Melo and Amare don't mesh thing was based solely on speculation. The second half of this season is the only time they have been able to practice and play together regularly...it's also when the Knicks woke from their coma. Too little too late, but these guy can definitely ball together and would likely thrive further if the triangle can be implemented and they buy in as per Phil's hope for everyone in the organization. Unfortunately the most important buy in is the fickle and logically impotent Mr. Dolan.
That may can seemingly ruin anything. And already seems to be trying.