Just to add some meat to the bones of my confidence :
“Nick is here to be evaluated,” said Renault team boss Eric Boullier. “Once we have finished our assessment of him, if we are happy with Nick, then we keep Nick. If this had happened in the middle of the season, then the car would have been developed, and you could give a young driver some miles to educate him in Formula 1. But we have to develop this car from scratch, so the obvious choice of driver is an experienced one.”
So Bruno is very unlikely to get this seat because it’s the experience that EB is after. Not only to drive the car, but to develop the car.
Mid-season, it makes sense to give the time to your young drivers, as it would be time well invested. Renault have a lot of experience putting young drivers in their cars over the last 5 years or so, and it’s never worked out really well for them, unless significant money is involved to sway their opinions.
That past experience, which is near traumatic in some case (ie Piquet) suggests experience is more desirable than throwing caution to the wind.