Morgan Wallen is opening a bar in downtown Nashville this weekend, but plans to build a 20-foot neon sign outside the establishment bearing the controversial country star’s name have officially been shot down, RadarOnline.com has learned. The Metro Nashville city council, whose approval is needed to construct any sign over a public right of way, voted 30-3 to deny the installation of the large glowing advertisement for Wallen’s new This Bar & Tennessee Kitchen. “We want to make sure that Nashville was a supportive place for everyone, so I don’t want to see a billboard with the name of a person…