without having access to internal athletic department or fund-raising documents, that's almost impossible to tell.
a lot of people credit Mason with helping the push for an on-campus stadium. I do remember hearing stories that Kill was going out and doing a lot of fund-raising, but I have no idea how accurate that is or what the result was.
My answer would be that coaches can certainly help with fund-raising, but the ultimate responsibility for that generally falls on the AD or people working with the AD.
and the fact that - as far as I know - Athlete's Village is still not paid for indicates that the current AD is not exactly doing a bang-up job of shaking the money tree.