IIRC the backstory posted about 10 pages back said they just contacted him behind the org's back.
The question isn't about skill; rather, they're now stuck with a GM who would rather be here on a 4 year contract.
James Johnson is sandwiched between Kevin Love, Paul Pierce, Marcin Gortat and Alex Len in WS/48. 0.1 VORP behind Carmelo Anthony.
Could you imagine other coaches benching those guys and not getting fired? Good times.