I disagree, they wanted to sign him, but Kuminga doesn't want they offer to him. He didn't get that much time because he was not that healthy I believed last season. It was like on and off to him. And so when playoff comes, Steve Kerr has made some adjustment as his first five is based on what opponents they have.
But I think Kuminga's mind is already set that he wants out of the Warriors and he is looking for at least $30 million a year contract. It is rumored that the Kings is really interested of him and was promised a starting five position. But not sure if that can be done as they have Lavine and DeRozan who fits the same role as Kuminga.
What I think is that, the health isn't an issue, but the fact that Butler is playing the same role as Kuminga does is the main reason why he got lesser playing time. Also one thing is that, if Butler and Kuminga are playing together, they are both -30 on offense as well, and that for me is one reason why they lost against the Timberwolves in the playoffs (excluding Curry being injured).
I wonder if there's a team that is willing to give him around $30-$35 million per year. As for the Kings, they want to get him, but the Warriors want either Keon Ellis or Keegan Murray on the package which the Kings declined. If for some reasons, they got Kuminga, and he doesn't fit with Lavine and DeRozan, the management can just trade either one or two of them mid-season.
As for Kuminga, I just hope that his risk will pay off for him, and will not become the next "Dennis Schroder". IYKYK