The Denver Broncos and the Los Angeles Rams begin their NFL exhibition schedules today in surroundings not unlike those in which they ended their 1986 seasons. A sellout crowd of about 80,000 will be on hand at London's Wembley Stadium and network television (WRC-TV-4 at 1 p.m.) will carry the game live coast-to-coast in the United States. Last year, the Dallas Cowboys met the Chicago Bears in London, the first time an NFL exhibition game was played in Europe.

Cincinnati Bengals -- Reported OT Anthony Munoz, a six-time Pro Bowl selection, rejected a three-year offer in excess of $500,000 a year.

Dallas Cowboys -- Reached tentative agreement to acquire OT Ron Essink from Seattle. Essink was on injured reserve last season.

New England Patriots -- Lost OL Trevor Matich several months, right foot broken in practice.

New Orleans Saints -- Signed WR Lonzell Hill, second-round draftee from U. of Washington and son of former all-pro J.D. Hill, to a three-year contract.

Philadelphia Eagles -- Signed WR Gregg Garrity, C Jerry Feehery to three-year contracts.

Tampa Bay Buccaneers -- Signed LB Jeff Davis, the team's leading tackler past three seasons, to a one-year contract.