Bullets General Manager Bob Ferry said yesterday that guard Kevin Grevey, who has yet to play this season because of a torn abdominal muscle, will probably be activated for tonight's 8 o'clock game against the New Jersey Nets at Capital Centre.

Grevey, the Bullets' third leading scorer last season with a 13.3 average, has been working with the team for the last three weeks without any setbacks and said yesterday he is ready to come off the injured list.

"I'm as ready as I can get without playing in real games," he said.

Neither Ferry nor Coach Gene Shue would say who will be released to make room for Grevey, but it is expected to be Billy Ray Bates or Carlos Terry, probably Bates.

Bates is a shooting guard who in the last five games has made only eight of 33 shots, 24 percent. Terry, very popular with teammates, is an effective defensive stopper.

In another development, starting guard Don Collins and reserve guard John Lucas missed practice yesterday and each was fined $250.

Car trouble was the reason they gave Shue and Ferry.

It was the first time this season either had missed a practice and Shue called it "a routine thing" and said no disciplinary action, other than the fines, would be taken.

"Don will still start," said Shue, "but if he's lousy, he's going to get pulled so quick . . . He's had three pretty good games in a row, but he's also had more than his share of chances."

Collins, a starter the past three games, scored a season-high 29 points and had five steals in the Bullets' most recent game, Saturday against Portland.

Ferry said he didn't consider it a major incident. "People are going to be late and miss practices sometimes, but when it's Lucas, you always have to wonder."

Lucas missed two games and a number of practices last season because of an admitted problem with cocaine, but this season had been on time for all practices and games until yesterday. He began the season on the third string, but has been backing up starting point guard Frank Johnson the last three weeks.

Neither Lucas nor Collins could be reached for comment, but Shue and Ferry talked to both and said the matter was closed.

Grevey, meanwhile, said he was "shooting good and feeling fine. I'm not having any trouble with my stomach and I've been pushing myself pretty hard. I think now it's just a matter of getting my timing and conditioning back to where I can be as effective as I want to."

The two other Bullets on the injured list, Dave Batton (sprained ankle) and Spencer Haywood (strained calf) don't appear to be ready to be activated.

Batton, who sprained his ankle Nov. 17 and was put on the injured list the next day, has practiced with the team the last two days, but Shue said he "doesn't look quite ready. He can give us the outside shooting we need, though, so we're anxious to get him back."

Haywood has been getting treatments in New York and is expected to start practicing Thursday. There are no plans to activate him until the coaches have seen him practice a few times.

The Bullets are last in the NBA in free throw shooting, at 66 percent, and spent extra time practicing foul shots yesterday . . . A victory tonight would be the Bullets' fifth straight . . . Johnson is second in the league in assists (9.1) and ninth in steals (2.07), Greg Ballard is third in steals (2.47) and Jeff Ruland is ninth in rebounding (10.5) . . . The Nets are expected to start Darryl Dawkins, Albert King, Buck Williams, Foots Walker and Otis Birdsong.