Assuming he actually was offered 4 years at 17.5M per, it is an ego over brains decision. No team is going to offer him enough to make up that loss. Teams are going to have even less cap space next offseason that they did this offseason. I think his offers will top out at 4 years at 15M per and that assumes good health.
There are teams that would have offered him a good sized contract this summer that didn't because the Mavs would have matched. Many of those teams will still have that option next summer (Brooklyn for example).
Frankly, I think a team like the Lakers or Nets, should have just offered him a 1 year contract at full max and forced Dallas to pay him that for a year.
Offer sheets to RFA's must be for at least two seasons, no team options.
