The Packers canceled player availability on Monday, bracing for bad news as authorities searched for the missing 21-year-old son of offensive coordinator Joe Philbin. Oshkosh police have yet to release the identity of the body. However, a source close to the family tells ESPN that Philbin's body has been positively identified. Police have been searching for 21-year-old Michael T. Philbin since Sunday evening. He disappeared at about 2 a.m. Sunday after an outing with friends in the U. of Wisconsin-Oshkosh campus area, about 50 miles from Green Bay.