A/roll bar links tend to knock and rattle, if I suspect you are hearing a wheel bearing drone,are you sure it is the n/s front,sometimes it is difficult to determine and would also check the rear and o/s front also. Not sure on your model but some Fords have an o/s support bearing on the driveshaft which can give a noise similar to a wheel bearing,also make sure pads and discs are in good order. Good luck.
cdc
February 2014