ORCHARD PARK — The wait for prized free agent defensive end Mario Williams to decide whether to sign with the Buffalo Bills will last yet another day.
The Bills announced Wednesday evening that Williams has left their facility and will return Thursday morning.
Williams' agent, Ben Dogra, wrote in a text to The Associated Press: "We are still continuing to talk."
The Bills flew the former Houston Texans star pass-rusher into town by private jet from his home in North Carolina shortly after the NFL's free-agency period opened on Tuesday.
It was a busy day for Williams a day after he had dinner with Bills management and coaches at a downtown Buffalo restaurant. After taking a physical and touring the Bills facility Wednesday morning, Williams traveled to the Buffalo International Airport to pick up his fiance.
Williams told Buffalo's WIVB-TV, "We'll see," when asked if his fiancé's arrival was considered a good sign regarding his negotiations with the Bills.
The Bills said Williams and his fiance, who was not identified, were given a tour of the region.
Behind quarterback Peyton Manning, Williams is regarded as one of the top free agents available since the market opened on Tuesday. And that means the Bills would have to pay a hefty price if they intend to land the player selected first overall in the 2006 draft by Houston.
The Bills have identified improving their pass rush as a top offseason priority after managing just 29 — including 10 in one game — last season.
Listed at 6-foot-6 and 285 pounds, Williams is a two-time Pro Bowl starter, who had Texans' franchise-best 53 career sacks, including a team single-season best 14 (2007). Williams was limited to playing just five games last season as a result of a torn chest muscle. He also missed three games in 2010 after having surgery to repair a sports hernia.