Coulthard identifies potential Hamilton replacement

David Coulthard has identified a driver who may potentially replace Lewis Hamilton at Mercedes.

Indentifying GP3 champion George Russell as a young prodigy with the talent to be a success.

"Potential is a great word in sport, a lot of young guys get into it using the word potential. And then of course the fulness in time will tell us whether that potential is fulfilled. But I think he's one to watch."