The owner of the Utah Jazz says he's prepared to offer Philadelphia 76ers star Julius Erving a two-year, $4 million NBA contract, but the 76ers general manager says he isn't worried Dr. J will jump.

Jazz owner Larry H. Miller has cleared the specific details of a potential offer sheet with Gary Bettman, the NBA's general counsel, the Philadelphia Daily News reported yesterday.

If Utah makes an offer for the veteran free agent, the 76ers will have 15 days under league rules to make a counteroffer.

John Nash, 76ers general manager, said Miller's proposal did not alarm the team, which has been holding contract talks with Erving's representatives. "In principle, we are very close to a deal that would make the 76ers and Julius very happy," he said.

Pedro Delgado of Spain edged Frenchman Bernard Hinault to win the 135-mile, 12th stage of the Tour de France.

Delgado took the first mountainous stage of the race between Bayonne and Pau in the Pyrenees with a time of 6 hours 3 minutes 18 seconds.

Hinault, five-time winner of the Tour, has moved into first place in the overall standings. He leads his nearest competitor, teammate Greg Lemond of the United States, by 5:26.

Inge Thompson of the United States won the fifth stage of the women's Tour de France, with Italian Maria Canins in second place and close enough to retain the overall lead.

The 18-mile course took the 82 cyclists from Arudy to Pau.

Canins finished just one second behind Thompson, enabling her to expand her lead in the overall standings over Jeannie Longo of France to 1:15 . . .

A 43-year-old California endurance cyclist, Peter Penseyres, knocked almost a full day off the record for crossing America by bicycle, winning the 1986 McDonald's Race Across America in 8 days 9 hours 47 minutes.

Professional cyclist Jonathan Boyer covered virtually the same 3,107-mile course in 9 days 2 hours 6 minutes last year.

Steve Howe, the 1980 National League rookie of the year, tested positive for cocaine in a urinalysis given by the San Jose Bees. Team president Harry Steve told the San Jose Mercury News he will ask Howe to leave the Class A Bees and re-enter a rehabilitation program.

"I'm pondering retirement right now," said Howe, who expressed shock at the test results. "I really don't know what's going on."

The Bees conducted the drug test on Howe, who had tested negative on eight previous occasions, Monday morning. He also was tested later in the day by representatives of Baseball Commissioner Peter Ueberroth's office in San Francisco. The results of the second test were not known . . .

The Milwaukee Brewers are negotiating for the return of veteran slugger Gorman Thomas, according to a published report.

The Milwaukee Journal, quoting an unnamed source, said the 35-year-old Thomas "could be returning soon" to Milwaukee, where he spent 10 seasons and helped win the 1982 American League pennant.

Thomas was released by the Seattle Mariners late last month. He was hitting .194 with 10 home runs and 26 RBI.