A couple of months ago we brought in a new Co founder to be the head of growth. We are a young startup with a product and a few paying customers.

The new Co founder is experienced and smart. I'm sure he works hard. But today I expressed the concern that if we don't meet some minimum sales targets I won't be able to pay my rent and I will not want to continue with someone who isn't able to meet minimum sales targets. To him this sounded like an ultimatum, a deadline with the worst consequences. I realise it's not great to put conditions like that, adds pressure and risk. But on the other hand if I'm not clear with the expectations and consequences from the beginning I'm afraid this will happen abruptly at the end. We are all fulled by dreams and equity here. How to manage this situation where he is understandably afraid that I'll walk away with the app and he will be left with nothing if he isn't meeting some targets in another 4 months. It's like a probation period. And I don't really want to be stuck with someone who isn't able to sell. Any advice on how to manage situation like this would be very much appreciated.