Despite face-to-face negotiations, Kurt Warner‘s agent, Mark Bartlestein, and the Cardinals couldn’t resolve their differences Thursday. Now the quarterback will become an unrestricted free agent at 12:01 a.m. ET Friday.

The Dallas Morning News is reporting that the Cowboys have tendered four players — wide receiver Miles Austin, defensive end Stephen Bowen, wide receiver Sam Hurd and offensive lineman Cory Procter. The players will earn $1.545 million this season, and teams would surrender second-round picks to sign any of the players, meaning that the four likely will be in Dallas next season.

In an expected move, the Jets released guard Brandon Moore on Thursday, according to his agent, Hadley Engelhard. Moore, who was due a $7 million roster bonus, could not come to terms on a contract restructuring and is now a free agent. Moore, a six-year veteran, started every game the past four seasons and he could be one of the more attractive options at guard in free agency.

Miami keeps spending and spending — to keep its team together and improve. The latest signing: Safety Yeremiah Bell has agreed to terms on a four-year deal worth $20 million, including $10 million guaranteed. Bell will play strong safety again this year and Gibril Wilson is expected to play free safety.

On the eve of free agency, some teams are positioned too well, and others not so well. Based on numbers gathered Thursday — and these are fluid, changing with each roster move that each team makes — here are the teams with the most and least salary-cap room heading into the start of free agency.

Between now and midnight Friday, some players will resign and be removed from this list, and some will be released and added to this list. But as of Thursday afternoon, here is a look at some of the top players — restricted free agents and franchise players are not included — heading into free agency.

Free agency kicks off Friday, but there will be plenty of headlines before then. Here is a quick look at some of the moves that might be made between now and then:

The Panthers tried trading Ken Lucas to the Detroit Lions, but the cornerback derailed the talks because he didn’t want to play in Detroit.

Buffalo’s purge continues. The Bills released tight end Robert Royal today. Earlier, they let go of guard Derrick Dockery. The Bills are clearing cap space and making moves, and they might not be done.

The Raiders won’t be afraid to make moves after 2008 didn’t work out as planned for the team.

Don’t expect Chicago to cry over the departure of quarterback Rex Grossman.

In what might be one of the worst kept secrets, the Washington Post is reporting that the Redskins will pursue Titans free agent defensive tackle Albert Haynesworth.

Two years after Buffalo made Derrick Dockery the highest-paid guard in the game, the Bills released him Thursday.

After being released by the Raiders after one season in Oakland, safety Gibril Wilson signed a five-year deal with the Dolphins.

The Atlanta Falcons and Keith Brooking have been unable to agree on a new contract, and the linebacker will head to free agency Friday, according to two sources with knowledge of the situation.