ft. end clicking noise on 2004 Volvo XC90

Clicking noise LF on deaccelleration, Lower clocking noise on aceluration , similar to cards on bicyle. Any ideas?

Asked by for the 2004 Volvo XC90
Have your front axle shaft checked and you can get a estimate here http://repairpal.com/estimator?car_type_id=4129 choose axle half shaft and you can locate a repair shop here http://repairpal.com/directory?address=41003&car_brand_names=Volvo