Tim McCarver has been offered the job as manager of the Montreal Expos, a source close to the negotiations said. McCarver, a broadcaster for the New York Mets, played briefly for the Expos during a 21-year major league career.

The Expos have been looking for a manager since Aug. 27, when they fired Bill Virdon.

Expos officials were not available to comment on the story last night. General Manager Murray Cook was reportedly on his way to New York.

A Montreal paper reported yesterday that Cook planned to discuss the job with former Baltimore Orioles manager Earl Weaver. Weaver, who also has been mentioned as a possibility for the Boston managerial position, said he probably wouldn't make any decisions until after Thanksgiving.

Weaver and McCarver are on the ABC crew covering the National League playoffs . . .

Felipe Alou, who formerly played for San Francisco, will be interviewed for the Giants' vacant managing job, it was reported . . .

California Angels Manager John McNamara, whose one-year contract with the club expired at season's end, will be offered the opportunity to return in 1985, Angels owner Gene Autry said . . .

Pete Rose, who is 94 hits behind Ty Cobb's major league record, has named his newborn son Tyler Edward Rose in honor of the Hall of Fame player, the Cincinnati Reds announced. Cobb's first name was actually Tyrus, but Rose and his wife, Carol, decided on the variation, although the child, who was born Monday, will be called Ty.