There are lots of bits that can cause noise down there.
Most common is the anti roll bar drop links, these are 12" dogbone looking things connected to the anti roll bar ends and the struts (just under the springs)
They can clunk and rattle very loudly over rough roads or turning up or down an incline, just as one wheel rises before the other.
Quite often it's felt under your feet as the ARB runs under there and connects both sides together.
Jacking up and "testing" them by pulling them about is useless, as the weight of the wheels pulls them tight, they need testing with the cars weight on the wheels.
Same goes for bushes as well, these need inspecting/prying to see if the move excessively.
The ARB D bushes that hold the bar to the subframe/chassis can wear a little as well, this usually results in a muted, fast rattle, not that common on these as some other models.
Ball joints and suspension bushes can knock, rough roads again or sometimes on and off power, as the wishbone/ball joint slaps back and forth.
The Panda's wishone bushes aren't the best in the world and have been known to split, particularly vertical bush to the rear of the front wishbones.
(the bolt run vertical for the rear one and horizontal for the one at the front of the wishbone)
Drive shafts can click on full lock, that's the outer CV joint showing wear.
The inner shafts joints can "slap" when worn, noticed when powering on/off the throttle. The (worn) tripod bearings move in the (worn) case and "clunk". They can also cause a bit of vibration as speed.
A wheel bearing will cause play if worn, often felt by rocking the wheels side to side, up and down.
But so can a few other items.
To rule "in" a wheel bearing as a problem, the play at the wheel will disappear once the foot brake is applied as this locks it up to the inner hub.
If this doesn't stop it, it's more likely a track rod end or inner steering tie rod that's causing it, felt by holding these joints and rocking the wheel again.
