I agree with Chas, I would say nothing either to him or to the prospective employer.
I know all the possible qualified applicants in the area, hell I trained most of them, and as far as qualifications go, not to sound arrogant, I am the most qualified based on what they are looking for.
Yes indeed, but don't be too disappointed if they choose to bring in new blood rather than the established expert as seems to happen often nowadays.