Clutch noise

Hi all, have another interesting noise from the old girl, when on tick over a grinding noise appears to be coming from clutch , you can change the to e by depressing the clutch, when clutch out its sounds like a loose tappit?? Drives perfectly well , doesn't jump out of gear at all , any ideas , help greatly appreciated

Realese bearing may be on its way out or already seized up.

Thanks for that , had a feeling but more advice is always welcome , will be doing that with a new clutch also