800S rear clicking noise

Thought I throw this out there to see if anyone has experienced this noise. While out last weekend I took off and heard a slight clicking from the rear. Got out and had it driven slowly and it sounds as if its in the axles/ rear end. The front axles and the driver side rear axles have slight side to side movement but the rear passenger side does not. Nothing visible and boots are good. Anybody run into this before? rzr is a 2011 model. Thanks.