Joe Johnson to test free-agent market in 2010

Add another superstar to the loaded free-agent class of 2010.
Atlanta's Joe Johnson has turned down an extension offer of four years and $60 million, per the Associated Press, and he will test the free-agency market after the 2009-2010 season.
Other NBA superstars, such as LeBron James, Dwayne Wade and Chris Bosh, are due to become free agents next season.
But Johnson has big expectations this season even if it turns out to be his last in a Hawks' uniform.
"I think we've grown a lot over the years," he said. "I think we've grown a great amount. I look forward to us being a different team. A lot of immature things we did on the court the last few years, even last year, I think we're ready to put that behind us and move forward and start being that team that can win our division."
The Hawks finished with a 47-35 record last year and second-place finish in the Southeast.
Last year's per-game average of 39.5 minutes was Johnson's lowest while in Atlanta. However, he might see considerably fewer minutes this upcoming season.
In his four seasons with Atlanta, Johnson has averaged 20+ points, 4+ assists and 4+ rebounds per game every season.