George Gervin, the "Iceman" who has led the San Antonio Spurs' offense since 1974, was traded to the Chicago Bulls yesterday for forward David Greenwood.

Gervin, who has a 27.3-point career scoring average and has led the National Basketball Association in scoring four years and was named to the all-NBA team five times, "has been a mainstay of this franchise for 13 years," Spurs owner Angelo Drossos said.

"It was a difficult decision, but a decision we had to make sooner or later," Drossos said. "We decided to make it now. We're not happy with making the deal. He's helped make the franchise what it is."

Gervin, 33, who failed to rank among the league's top 20 scorers last year for the first time in his nine NBA seasons, said, "It ain't like I'm dying. I got a new job, a new owner and new people to deal with. If you're a good person, you can deal with that."

He said he would continue to make his permanent home in San Antonio.

Gervin's agent, Pat Healy, said the Bulls agreed to pick up the 12 months remaining on Gervin's $750,000-a-year contract, which also carries incentives up to $300,000.