Jim Caldwell didn't exactly shoot it down when asked Monday if the Detroit Lions are one of the teams reportedly interested in Australian rugby star Jarryd Hayne.

"I can't tell you much about that," Caldwell said at his weekly news conference. "I mean, I know who he is, obviously, but I don't know what I'm supposed to tell you. I have no knowledge of it in that regard.

"To be honest with you, it could be. It could be a personnel issue, but I'm not aware of it. Besides that, our focus is pretty narrow this time of the year, so getting out of that realm, it's hard to do. But it could happen.