Former Maryland basketball coach Lefty Driesell has defended Bobby Knight for remarks the Indiana coach made to the effect that former Terrapins star Len Bias is to blame for his drug-induced death.

"He's out trying to tell kids not to use drugs, like I did, and the media tried to put something in there to make him look bad," Driesell said.

At a basketball camp for high school students in Pittsburgh Tuesday, Knight said, "I don't feel sorry for Len Bias. If some of you are popping pills or smoking dope, those are bad shots you're taking."

Driesell said: "I wasn't there, but I don't have to be there. He was in the same position I was. I'm sure he didn't mean it to come across that way."

Driesell was the subject of considerable controvery last month as the result of remarks, which he later said were misconstrued, at a Rhode Island seminar to the effect that cocaine use could improve basketball performances . . .

The agent for Brian Bosworth yesterday said the former Oklahoma linebacker has changed his mind and would play for the Seattle Seahawks "if they meet our proposal."

Bosworth's representative, Gary Wichard of New York, told the Seattle Times that Bosworth enjoyed two amicable meetings in Dallas with Seahawks Coach Chuck Knox.

"A great football player and a great coach always seem to get along," Wichard said. "If they meet our proposal, Brian will be happy to play there."

Wichard said he expects to receive Seattle's offer next week, adding he and Bosworth will consider only one offer.

Bosworth, an all-America, gave up his remaining year of college eligiblity to enter the NFL suplemental draft. He was chosen by the Seahawks, who were not among Bosworth's list of five acceptable teams . . .

Dick Myers, assistant general manager of the Washington Redskins from 1978 until 1982 and general manager of the Washington Federals of the USFL in 1982-84, has been named assistant athletic director for operations at American University. Myers, 41, comes to AU from Synergos Inc., where he was executive vice president of its sports management division.