from Dana Wakiji of DetroitRedWings.com,
Green told coaches that did not have his usual energy so they held him out of practice and sent him to see the doctor.
"He's not available right now," Wings coach Jeff Blashill said after Friday's practice at the BELFOR Training Center. "He's got a virus that attacked his liver, so he's seen an infectious disease person today and we should know more here in the next little bit. I don't know how long he's going to be out. I don't know the totality of it. He's got a virus.