There are no rumors about Ondrusek. But most of the stories on MLBTR are regarding the Tigers inquiring with teams about a closer.
The story goes that rookie Bruce Rondon, who the Tigers were prepared to go with as Closer, is having mechanical problems. The Tigers let last year's Closer, Jose Valverde, walk. And have no intention of bringing him back. Manager Jim Leyland is quoted as saying the following, ""...[T]here is no question that it makes it a hundred times better when you have a closer that is a closer -- and a good one -- because it takes a lot of pressure off the manager."
The Tigers have inquired about Marmol, with the Cubs, and also with the Nationals who sign Soriano and have Tyler Clippard and Drew Storen as backup Closers.
So why not float the much maligned on Redszone, Logan Ondrusek, out there for trade? He closed alot late in his minor league career. I'm not sure what he would bring in return, but I'd consider it.