Burrell, 26, has averaged 8.0 points and 3.9 rebounds during his five NBA seasons. He spent the first 3 1/2 years of his career with the Charlotte Hornets before being traded to the Warriors.
Simpkins, 25, has averaged 3.1 points and 2.4 rebounds in three seasons with the the Bulls.
* The Cleveland Cavaliers signed free-agent forward Henry James, who tied an NBA record last season by making seven three-pointers in a quarter.
The 6-foot-8 James, 32, appeared in 53 games for the Atlanta Hawks last season and averaged 6.7 points.
He also connected on a career-best 42 percent of his three-pointers, and could prove to be even more valuable this season because the league has moved the three-point line to 23 feet, 9 inches, back from last year's 22 feet.
* After being suspended and quitting school, Minnesota star Courtney James will play in Greece.
James, who played for the Golden Gophers in the NCAA Final Four last March, decided to leave school after the university suspended him Saturday.
He was convicted in August in a domestic assault case.
James said he has a seven-month deal in Greece. But he may have to return to the United States because he is scheduled to be sentenced on Oct. 7.
COLLEGE BASKETBALL Luke Walton, the son of former NBA great Bill Walton, has agreed to play basketball for Arizona, the defending NCAA champion.
Walton, a 6-foot-8, 200-pound forward, attends San Diego University High School. He also was recruited by Utah, Boston College and Southern Cal.
UCLA, which the elder Walton attended, got in late and was never a serious candidate.
* Former Sacramento State coach Don Newman, hired in May to help Bill Frieder recruit players for Arizona State, has replaced his former boss as head coach there.
Athletic director Kevin White gave Newman the interim job after falling short in attempts to hire a big-name coach after Frieder resigned on Sept. 10 following point-shaving allegations involving 1994 road games.
The FBI has said that neither the school nor its officials have been implicated.
Newman, 39, inherits a team that went 10-20 last season.
BOXING Former heavyweight champion George Foreman, 48, is scheduled to fight Shannon Briggs of Brooklyn, N.Y., on Nov. 22 in Mashantucket, Conn., a spokeswoman for Foreman said.
Foreman, 76-4, will turn 49 in October. Briggs, 25, is 29-1 with 24 knockouts.
SOCCER Mathew Westfall of Villanova was named Big East defensive player of the week after helping the Wildcats gain a 1-1 tie with 10th-ranked Rutgers and a 1-0 victory over Connecticut.