Linebacker Anthony Barr told his agent to accept the deal with the New York Jets, an offer that would pay him an average of $15 million per season for five years. Instantly, the former first-round pick and four-time Pro Bowler regretted his decision.

Less than 24 hours later, Barr's agent told the Jets his client would not accept their offer after all and, instead, would return to the Minnesota Vikings. For far less money.

"Because of the money, he was going to have to test free agency," Vikings coach Mike Zimmer said. "We knew he was going to get more than we could pay him. It shows to his loyalty, what he thinks about ownership, team, organization. It's very rare that guys do that."

Here's a behind-the scenes look at an emotional day for Barr that included a sleepless night, plenty of advice from his mom and one telling test by his agent.

Monday, March 11

Barr, 27, experienced the worst and best day of his life within a matter of 24 hours.

The free agency legal tampering period opened at 11 a.m. CT and ended at 3 p.m. CT two days later on March 13, the official start of the new league year. It's a window that allows for teams to engage in talks with pending unrestricted free agents so financial figures can be negotiated and ironed out ahead of when players can officially sign with their new teams.