Doc Rivers has questioned the Boston Celtics' decision to allow Kevin Garnett and Paul Pierce to join the Brooklyn Nets.

The experienced duo both agreed deals with the Nets earlier this year and former Celtics coach Rivers has claimed that Boston supporters didn't get to know Garnett's personality during his five-year spell.

"I wish the city got to know Kevin more. He's the single best athlete that I've ever been around as far as being a team guy. He's as 'team' of a star as I've ever seen," Rivers told reporters at a charity event in Boston.

"That was a tough one for me. Even when I was here and it was being talked about — my thing is, Kobe [Bryant] is going to end up being a Laker for life. Dirk [Nowitzki] is going to be a Maverick. That's the one thing that, if we didn't do right, that was the one right thing we didn't do for Paul."

Rivers joined the Los Angeles Clippers from Boston in June.