Does the click sound like it is on the left side or right?
I just changed my clutch and serviced the mechanism this weekend.
The cable and mechanism is on the left side, which pushes a pushrod through the engine to separate the plates on the right side.
It's maybe a snapped clutch spring. That would click and reduce the plate pressure, or perhaps the centre clutch boss has failed. It's cast aluminium and one of the legs might have snapped off.