Hi, I have a 54 Renault trafic with gearbox rattling however when I dip the clutch the rattle totally stops. Could this be the flywheel or gear box?

Hi all..... I own an insignia 2010 2.0tdci. It's got 120000 on clock. Now it appears flywheel has shatterd causing the engine to lock up. There is no turn over at all. Now im wondering if my engine has seized up Or if the flywheel could have caused damage to the engine. Please any advice is...