NBA legend offers brutally honest advice to Ben Simmons

"I think he's got another run in him, but it's gonna have to be Ben Simmons, bro."

The 2007-08 Boston Celtics might not have invented the superteam, but they perfected it

Paul Pierce, Ray Allen, and Kevin Garnett formed a special Big Three in Boston.

BOSTON – DECEMBER 03: Kevin Garnett #5(left) of the Boston Celtics talks with teammates Paul Pierce #34 and Rajon Rondo #9 late in the fourth quarter against the Indiana Pacers on December 3, 2008 at TD Banknorth Garden in Boston, Massachusetts. The Celtics defeated the Pacers 114-96. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Elsa/Getty Images)

Kevin Garnett, Paul Pierce and the rest of the 2008 Celtics are still very, very bitter about Ray Allen leaving