First-round draft pick Jim Harbaugh agreed to terms with the Chicago Bears yesterday, moving the rookie from Michigan into the team's quarterback derby.

Harbaugh worked out with three other quarterbacks -- Jim McMahon, Doug Flutie and Mike Tomczak -- while Steve Fuller continued to rest his injured right shoulder. With the uncertainty of McMahon's status coming back from shoulder surgery, Harbaugh has an opportunity to be anything from the starter to No. 3 quarterback.

Giants:

William Roberts, who spent most of last season on the bench, is going to be given every chance to replace Pro Bowl offensive tackle Brad Benson in New York's starting lineup, Coach Bill Parcells said.

The 6-foot-5, 280-pound Roberts is considered one of the best run blockers among the Giants' offensive linemen, and Parcells said he is waiting for the former Ohio State star to develop as a pass blocker. "As soon as he gets to where he can pass block as well as he can run block, we'll be fine," Parcells said. "He is looking pretty good right now, but he has to do it under pressure against good competition."

Benson, 31, had his best season in helping the Giants win the Super Bowl last year.

Roberts, who will be 25 on Wednesday, was a first-round draft pick of the Giants in 1984 and won the starting left tackle job that season as Benson alternated at left and right guard. Benson also played left tackle when Roberts suffered an ankle injury.

Rams:

Free agent tackle Irv Pankey was the lone veteran to miss the team's chartered flight bound for London, where it will play the Denver Broncos Aug. 9 in the second annual American Bowl at Wembley Stadium.

Eric Dickerson, the NFL's top rusher last season, was among 88 players who made the trip. His business representative, Charles Chin, denied reports Dickerson walked out of training camp Saturday after hearing of Bo Jackson's $7.4 million contract with the Los Angeles Raiders.

Under terms of his present deal, Dickerson will earn $683,000 each of the next three seasons.

Dolphins:

An estimated 20,000 watched Miami run through a scrimmage at the $100 million Joe Robbie Stadium, the club's first full-scale workout at the new facility.

Coach Don Shula said, "It's going to take a few games where it's close at the end and you get that excitement to make you feel at home." He said it would take some getting used to "the feeling of not having an open end {to the stadium} like the Orange Bowl."

Bengals:

Brian Blados, a 300-pounder from Arlington, Va., who just two years ago was considered one of the premier guards in the league, finds himself trying to regain his starting position. Last season, the former North Carolina player from Washington-Lee High School was shifted from left guard to right tackle, a move that proved detrimental.

"I gave up five or six sacks in the first half of the season. That's not very good when the whole team gives up 11," Blados said.

He was benched for the second half of 1986 but, for this season, has been moved back to left guard.