Defensive end Charles Mann refused to get into a public debate yesterday over a comment by Phoenix Coach Joe Bugel "that Dexter Manley made Charles Mann."

Bugel made the statement on Monday in explaining why he wanted Manley to join the Cardinals, and Mann said he didn't think Bugel meant it as a slap at him.

"I'd never have known about that if you hadn't told me," Mann said. "I don't agree, I don't disagree, I don't really have a comment on it. Everyone is entitled to their opinion. If that's what he believes, fine. He's a head coach and an adult. He can have opinions."

Likewise, Redskins Coach Joe Gibbs said: "I'm not going to touch that one."

Mann, choosing his words carefully, also refused to say whether he thought Manley should have been brought back to the Redskins. What he did say was that he wished his former teammate the best.

"I'm happy for him," Mann said. "They were going to let him back in if he did the right thing, and he has. It's good to see."A Deal for Johnson

Redskins H-back Jimmie Johnson has agreed to do about 10 hours of community service work at a Loudoun County drug-addiction treatment facility in exchange for having two handgun charges dropped.

Johnson was arrested near his home in Sterling three weeks ago and charged with concealing a weapon and firing a handgun within 100 yards of a state highway.

Police said he was shooting target practice with a .38 caliber semi-automatic handgun near the Washington and Old Dominion bike path at about 11:30 Halloween night. A Loudoun County sheriff's deputy drove by and heard the shots.

On Monday, the concealed weapons charge was dropped in exchange for Johnson pleading guilty to the charge of firing within 100 yards of a roadway. That charge also will be expunged on Jan. 30, 1991, if he doesn't get into more trouble with the law and does the community service.Howard Ready to Return

Return man Joe Howard, who suffered a concussion against Philadelphia and was held out of Sunday's victory over New Orleans, said he'll be ready to go Thanksgiving Day in Dallas.

"I thought I could have played last week," he said. "I had a headache the night after it happened, but was fine the next day. I haven't had any problem since then."Rypien: Player of Week

Mark Rypien, who came back from a seven-week absence to throw four touchdown passes against the Saints, was named the NFC offensive player of the week . . . Guard Mark Schlereth, who suffered a severely sprained ankle two weeks ago, is doubtful against Dallas . . . Cornerback Brian Davis, cut by the Redskins last Friday, was claimed on waivers by the Seattle Seahawks . . . Gary Clark leads all NFC East receivers in catches (51) and yardage (785). He trails only Jerry Rice in receiving yardage the past four seasons.