Don't think it's about money. Supposedly the new guys are playing better in practice... and he probably felt like he won't see significant playing time.
Well, he’s apparently being promised better money… so at the very least, money has a role in it. That’s the nature of this beast now though, in every major sport. Maybe at some point there will be a correction that settles this stuff down a little, but I’m not even really counting on that anymore.