1994 Toyota Camry 94 Camry Front Driver Clicking noise at s

I hear a clicking noise coming from the front driver side of the car. It only happens when the car is moving at 10mph or more. It occurs whether I am depressing the gas pedal or not, and its sometimes more violent when I am coasting. It causes the car to shake when coasting. It even occurs when I put the car in neutral at speed. Seems to be related to the wheels rotating, happens when I am traveling straight, has no relation to turning of the wheel. Mechanic suggested a minor exhaust related issue, does not seem logical to me because of the shaking associated with the clicking noise. I have looked at the tire from under the car and the CV boot is fine and I see no hanging parts which could interfere with the wheel's motion. Great car, want to make it run smoothly again thanks!