Rivers objected to Simmons repeatedly saying he quit  on the rebuilding Celtics , and said: “‘I would like to call him an idiot, but I’m too classy for that. That’s just his opinion. That didn’t happen. He really needs to know the whole truth, which he doesn’t.’
A day later, Rivers wasn’t backing down.
“Bill’s a fan,” Rivers told Patrick. “Is he qualified to do the NBA? Well, we can debate that all day. But Bill’s a fan. And I get that. Not a friend of mine or a fan of mine, and he never has been. I rarely respond. You know that. I don’t do it very often. But I’d just kind of had enough of that. I thought it kind of ruined the broadcast last night, ’cause he kept bringing it up. It was almost like he had an agenda. I was just getting tired of it.”
While acknowledging he fared well by moving to the Clippers, Rivers said the Celtics had a strategy and they stuck to it.
“I think last night happened exactly the way Danny the Celtics wanted it to,” he said. “They wanted to unload contracts for draft picks, and I happened to be one of those contracts.”
Added Rivers: “Clearly, yeah, I had a selfish motive. I had a chance to not rebuild and go to a team that is in a different phase of their franchise so everybody benefited. And I clearly, at least I hope, I benefited from it. But this is done together. This is not me walking into the Celtics and saying I quit or anything like that.”