He'll 'fire' you. As in he'll just walk off and employ one of your neighbours instead - one of them will feed him. I don't have cats at my new place, but I'm pretty certain my parents' cats are being fed by at least three houses in their street...
EDIT - Sorry, I've just seen that you said lock...
For me, the Wolverine's time has come, and has my vote.
If there were a betting market though, I'd probably be putting a couple of hundred quid on the bloody Tabby walking away with this year's trophy...