The Redskins are considering trading or waiving backup quarterback Mike Kruczek before next Thursday's minicamp at Redskin Park, it was learned yesterday.

Kruczek became expendable when the club selected two quarterbacks, Tom Flick of Washington and Phil Kessel of Northern Michigan, during this week's NFL draft.

"Nothing definite has been decided about Mike's future," said General Manager Bobby Beathard. "We'll have to wait and see. But we think both rookie quarterbacks can play in this league or we wouldn't have drafted them."

It was confirmed that the Redskins will surrender a fifth-round 1982 pick to St. Louis if they sign running back Terry Metcalf; and if Metcalf fulfills incentive clauses regarding yards gained, the fifth will become a fourth.

Kruczek was acquired by Washington last summer for what has become a fifth-round 1982 selection in a trade with Pittsburgh, where he had been a standout backup to Terry Bradshaw. But he disappointed former coach Jack Pardee's staff with his play, especially after replacing injured Joe Theismann late in the season.

"I don't understand why this is happening, I can't see how it's justified but I'm not in a position to change it," Kruczek said yesterday from his home in Pittsburgh. "I knew they were going to draft somebody at quarterback. I just got that feeling. I knew they weren't that happy with me. I had talked to Bobby after last season and got that impression. But I thought I had a good minicamp (in early April). I just hope they'll give me a chance to keep showing what I can do.

"It was tough for me last season. (Offensive Coordinator) Joe Walton thought it took four or five years to learn his system and he had that special relationship with Joe (Theismann). All that got in the way sometimes. I knew my place and I wasn't as competitive as I could have been.

"I had fallen into some bad habits, like passing off my back foot, things that I had picked up by being around Terry Bradshaw for too long. But I've worked hard in the offseason to correct those things."

Washington had offered Kruczek to Miami last week in exchange for Don Strock, but the Dolphins turned down the deal. Earlier attempts to swap Kruczek have failed.

"There is no question I was deeply concerned about our backup quarterback problem before the draft," said Coach Joe Gibbs. "But I'd like to see Mike come to the minicamp and compete for the job. I wouldn't want to give up on him without making sure he can't do the job."

The John Riggins arbitration hearing, which had been scheduled for May 27, has been postponed again.

The new tentative date is either June 13 or June 16. . . . Linebacker Brad Dusek is out of the hospital after back surgery last week, but is on a restricted exercise program for three weeks. "I really think he'll be back before the end of the season," said Defensive Coordinator Richie Petitbon . . . As soon as the draft was over, Washington scouts began calling potential free agents, trying to get commitments from players for the upcoming minicamp . . . As it stands now, the Redskins don't have a first, fifth or eighth selection in next year's draft . . . Washington will hold a rookie camp Tuesday and Wednesday of next week before the veterans report for practice Thursday.