Would they really try and quantify clutch wear? As far as they're concerned, the clutch is operational at point of hand-back inspection or it isn't. As long as the tyres are legal (maybe insistence of at least 3mm tread)
Biggest lease company concerns are "is it working" and visual appearance, looking for dings, dents, scuffs, scratches to either the bodywork, wheels and interior as well as seat wear. Stone chips are usually considered fair wear and tear to a point, but depends who you're dealing with and how many you've got.
Once that car is back with the lease company it'll be going to auction in the vast majority of cases, it just needs to look tidy.