The source was Colangelo who said clearly on more than one occasion that Calderóne was very upset with the KL signing.
I think I would be more concerned if Jose wasn't upset that someone had been hired to take his job. The guy plays his ass off at all times and has been a great team player since day one. I feel that he has put the team ahead of personal success over and over and in return he has been traded once, been the repeated talk of trade speculation, had 3 over PG's hired to take over. Jose is a competitive guy and wants to play and help the team. I think he will continue to show the same character that he always has going forward regardless of his role.