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Asked if he thought Arenas had learned his lesson from the events of last season, Grunfeld wouldn’t bite.

“He’s put in all the time that he needs to put in,” Grunfeld said.

Notes: Grunfeld said F Josh Howard might return in November or perhaps December. Howard had surgery in March on a torn ligament in his left knee. … F Andray Blatche, recovering from surgery to repair a broken bone in his right foot, has been given “full clearance” for basketball, according to Grunfeld, although it might be a week or two before Blatche takes part in full contact drills. … Grunfeld’s pre-training camp news conference usually contains a reference to playoff aspirations, but not this year. “We’ve made no secret of the fact that we are rebuilding,” he said. “We want to be competitive.”