Mine has started to make similar clunk noise as described above but not pads or links as these have been changes very recently.
Clunks at low speed when getting on and off the accelorator but also when in neutral coasting at about 10-20mph????
Clunk... Clunk... Clunk...
Had a Subaru specialist look at it but they're scratching their heads. Had probe to it on the ramps, been out in the car hanging out window to listen etc. No excessive play in shafts etc
Concluded nit gear box due to the frequency of the clunk (thank god). Thinking either CV or drive shaft????
Will update if we ever get to an accurate diagnosis