According to Chris Mannix of Sports Illustrated, Johnson and Buss had a three-hour meeting Monday discussing the direction of the team, but he didn't express "he no longer wanted to be part of it."
He also met with James and his agent Rich Paul on Saturday without indicating any plans to leave, per Adrian Wojnarowski of ESPN.
Johnson announced his decision in an impromptu press conference Tuesday:
"(Jeanie) doesn't know I'm standing here," he said of Buss, per Dave McMenamin of ESPN.
Despite the surprise from his announcement, Johnson seemed to suggest he had been thinking about it:
"We been talking about next year and I'm sitting there saying, 'I'm not gonna be here,'" he joked as he shook his head.
This leaves the Lakers without much of a plan going into an important offseason.
Los Angeles has missed the playoffs in each of the last six years, but the squad has higher expectations after adding James last summer. Important moves need to be made in order to become a contender.
While James and Buss were likely wondering about the strategy going forward, it appears as though Johnson was considering his own future.