* Dallas Cowboys -- Agreed to terms with Dean Hamel, defensive tackle, on a one-year contract.
* Detroit Lions -- Signed Michael Cofer, linebacker, to a two-year contract.
* Houston Oilers -- Waived Eric Bergeson and Cleveland Colterm, safeties; Mike Norseth, quarterback; Derrick Debnam, defensive lineman; and Kerry Porter, running back. Signed Ian Howfield, kicker, and Lester Brinkley, defensive lineman.
* Minnesota Vikings -- Agreed to terms with Al Noga, defensive linemen.
* New York Giants -- Signed Pepper Johnson, linebacker. Acquired Sean Love, guard, on waivers from Dallas.
* Philadelphia Eagles -- Signed Wes Hopkins, free safety, to a two-year contract.
* Seattle Seahawks -- Signed Darren Comeaux, linebacker, to a one-year contract. Placed Stacy Danley, running back, on injured reserve.
* Tampa Bay Buccaneers -- Signed Charles McRae, offensive linemen, to a five-year contract.