[WSSix]

Cash is the safest way. Just deposit the money over the course of a few months or weeks if possible. Grab yourself a black light before going and scan every dollar.

The other option is wire transfer. You'll have to give him your bank account and routing number though. I've been told this is still safe because even with that info he can't initiate anything. I've never done it though.

You may be able to get a separate account created just for this one time or for occasional use. Possibly talk to your bank to see if they are willing to help or have an option.