It was widely reported. A quick google search brings up articles from nbcsports and legit Detroit writers, but I do recall one of the TSN insiders reporting Bertuzzi's name was out there right before the season. You can post stuff like this, or just go look it up yourself. I surely can tell the difference. Can you?
EDIT: Here's a link that includes multiple links and quotes regarding specific teams having interest, including Elliott Friedman saying Toronto was interested this summer.
Red Wings: The Latest on Tyler Bertuzzi Trade Rumors