Truth is, Delly barely improved this season to his rookie season in any stat bar his 3pt%. Still isn't a good playmaker, still doesn't shoot well, still looks like a better defender than he is because he fouls to stop fast breaks and can't stay in front of many people.
Yes he had some great playoff games no doubt, but a team isn't going to pay anyone big money to sit on the bench all year just in case their starting point guard goes down again.
He'll probably get 10 minutes a game, but is he going to be able to impress any of the 29 other teams enough in that time to get paid?
Maybe he deserved a little more, but the fact he only got the minimum isn't exactly mind blowing either.