NFL bylaws require approval of three-fourths of the team owners before a franchise can move out of its city even if it's in the same area, Tagliabue said at a news conference after the meeting in Irving, Tex.
"There was some discussion about what that means to Baltimore and I made it clear it had no bearing on Baltimore" Tagliabue said.
The Redskins have announced plans to move to Laurel, which is about 15 miles from both Baltimore and Washington.
Owner Jack Kent Cooke has said one team is all that the two cities can support, but Baltimore still is trying to attract a team to Camden Yards.
Cornerback Deion Sanders twisted his left ankle during a San Francisco 49er workout, going down in a heap during a pass coverage drill.
Sanders was carried off the field. Coach George Seifert said it probably would take a day to determine the severity of the injury.
Meanwhile, Tagliabue emphatically approved Sanders' $1.1-million contract, saying despite protests from other teams, the 49ers met every salary-cap obligation.
Lorenzo Lynch of the Arizona Cardinals was put on a work-furlough program for failing to perform 100 hours of community service on an assault conviction in 1992.
The defensive back turned himself in Monday on a misdemeanor assault charge and was being held without bond.