What Wrightyson said, what are the symptoms?
Replacing a clutch is expensive s worth getting him to do it, but it’s highly unlikely to just go all of a sudden, you can nurse a slipping clutch for 1000’s of miles before it becomes undrivable.
Clutch cables snap and are a cheep job to replace, less than 400miles of petrol anyway.
Hydraulic clutches are much less common but aren’t much more bother to rebuild, if you can do MTB brakes you cna do a cars clutch.
Or it could be one of the other components in the clutch (spiggot, release bearing, release arm, spring plate) which usualy go and result in lots of noise when they go, but are usualy built to last at least as long as the friction plates unless you sit with your foot on the clutch a lot or use it as you would a motorbike clutch.