From WWE.com

Brock Lesnar update
July 21, 2005

According to the Grand Forks Herald, former WWE Champion Brock Lesnar will not be at an NFL training camp, agent Ed Hitchcock said.

This follows news that Lesnar met with Vince McMahon earlier in the month regarding a possible return to WWE.

Note: This is basically just to try and gain publicity and rub it in the face of the NFL that Lesnar is back with WWE.