But John Stone told the newspaper he won't return to Webb Chevrolet in suburban Oak Lawn, Ill.
"I'm not going," he said.
Stone told the newspaper he wore the tie as a tribute to his recently deceased grandmother, who was a big Packers fan.
Meanwhile, Stone has another job offer to weigh -- from Chevrolet of Homewood, another Chicago suburb.
"Good salesmen are so hard to find," said Guy Cesario, the rival dealer's general manager. "To put somebody's livelihood in jeopardy because of a tie is just idiotic."