BigCountry

Here's one for you guys. Just started today, rolled the bike out of the shop, all good. Rode about 10 miles stopped for a pic, noticed a clicking noise which sounds like coming from the rear wheel. First thought is a u joint in the drive shaft. When riding I cant hear anything. Jacked the back tire up and spin the wheel, no noise. Roll the bike on the ground. Click click click, forwards and backwards?????????