There is no way I'd sell my customers to any of my guys.
There is no way I'd sell my customers to anyone though.
I know quite a few window cleaners who employ and are sick to the back teeth of it
Speak to him there is perhaps a franchise deal to be had.....
This is perhaps a better proposal than:
"Excuse me, I know you have given me a job, trained me up and helped me out but I'm thinking about setting up in direct competition against you, fancy giving me a hand to start up?"