My listings are purchase with Paypal account only, but want to make exception for l customer- how?

[sincerelyalexis]

The setting in my listings settings say that  customers may bid only if they have a Paypal account. How can I make an exception for only one select customer?

[toby_le_pue]

http://pages.ebay.ca/services/buyandsell/biddermanagement.html