1994 Chevy 3500 6.5 turbo diesel 4x4 manual transmission

Chevrolet Silverado 3500 6.5 turbo diesel. Condition is Used. The trucks engine runs fantastic. It has been checked out by a mechanic, but it is not drive-able as the clutch has failed. As far as we know that is all that is wrong to make it drive but I want to sell it because I bought it for my son and I think he tore the clutch up. He just can't drive it. It worked fine when I drove it. Power door locks are sluggish and power windows work. All lights work and it has trailer hookups for about anything you want to haul. 4 wheel drive does work.Ac doesn't work. Haven't had that looked at. Any other questions feel free to message or If you need more pics I can add some more. Also needs new plug for engine block heater.