Knocking from gearbox

Oct 26, 2021
2
0
Derbyshire
Hi guys and girls,
I picked up my MK1 Leon cupra AUQ last week and have a knocking sound coming from what I think is the gearbox.
It stops when I engage the clutch, could this be a sign of a single mass flywheel or would you guys say this is a DM flywheel on its way out. Is there anyway to tell what I have without removing the box
 
Genuine SEAT Parts and Accessories.