I'd top it up and let it sit a bit. That's a lot of headspace.
To clear it, it'd be helpful to know what's causing the haze. If it's a pectin haze, for example, pectic enzyme will clear it. If it's a yeast haze, bentonite will clear it. KC finings (which have both positively and negatively charged finings) will clear just about anything. But the best clarifier is time. It sure looks young, and like there is still some sediment that will drop out on its own.
Cooler temperatures, as little as 10 degrees cooler, often will cause clearing so that would be my first choice.