Advice needed- '07 WQ Fiesta

[Dusty]

Hi all, a friend is thinking of buying a WQ Fez , 118k on the clock. We went for a 30k test drive and noticed what seemed like a small rattle just as the clutch takes up in 1st gear. Could this be the thrust bearing? Anyone had experience with this? How long could it last before it needs attention and how costly to fix. Rest of the car is in good nick and drives like a new one.