Visioneer Movie Michigan shirt: How can I get the Michigan shirt James LeGros is wearing?

James LeGros plays Julieen, George's brother, in the movie....he is wearing a vintage looking Michigan shirt with what looks like a fox on front when he is pole vaulting. After looking online, I have decided that although it appears to be a fox, it could be a wolverine (probably). I am desperate to find this shirt somewhere. Help?