Resetting WP-Stats ?

Hello,

i’d like to know how to reset the stats for my Blog. Actually, a new owner will be using the domain-name and my wordpress-installation on a new host.
or: is there a way that he creates a new account on wp.com with new API-keys and stats for the same URL without having errors?

I dont want him to see the stats. thats it. and thats important. and i need to know fast, deadline is on sunday 🙁

tried the search, but it seems that there is no option to reset the stats manually..:(

P.S the data are not hostet on wp.com, its a private server if it matters. but acutally i log in to an wp.com account for the stats..