Terms of the deal announced Wednesday weren't released, but it's reportedly a one-year contract for the veteran's minimum of $1.4 million.
The four-year veteran averaged 7.8 points and 5.8 rebounds in 288 games with the Spurs. The second-round pick in 2009 started 166 games in San Antonio.
Blair has two career 20-point, 20-rebound games. One was against Dallas on April 24, 2010, when he had 27 points and 23 rebounds.
Information from ESPN.com's Marc Stein and The Associated Press was used in this report.