Marvin Harrison isn't receiving much interest from teams on the free agent market, which has surprised a former NFL general manager. "I'm not surprised," said Charley Casserly, a former general manager with the Texans and Redskins who is an analyst with NFL Network. "When I watch him as a player and look at the package, he's not going to get any better at this point in his career. "He's been injury-prone the last two years. He's missed time. That has to be a consideration when you're going to sign a guy."