The Golden State Warriors have more roster questions to answer than just what to do with Jonathan Kuminga. For instance — is there a real backup point guard on this team? Steph Curry, of course, is the starter, but after him, there isn't a clear ballhandler in the second unit. Brandin Podziemski is the de facto backup "point guard" but he's not out there to facilitate.
So the Warriors might be forced to adress this problem on the open market, which... is looking a little rough right now. Cameron Payne is probably the best option still available the Warriors could get on a vet minimum salary.