In need of some advice here!

A neighbour who knows nothing at all about cars has a black Fiesta MK5 Zetec S. It has full black leather, standard alloys with new tyres, air-con, engine has covered 99k. It has been left in the car park for 9 months since failing its MOT on rot, cracked windscreen and its clutch has had it. He was saying about scrapping it the other day which made me think.....Would it be worth anything in parts or are they not that desirable, and do MK5 Fiesta parts fit the Puma, say the seats?

Thanks for any help in advance.