There is nothing to discuss. Give him written notice of having to leave the premises in 30 days and put in a letter that if he doesn’t vacate in 30 days you’ll get courts involved ,sent it as attachment to email and to text so there is evidence and give him paper copy too. If he doesn’t leave in 30 days, get courts involved.

Letting someone live in your house rent free could back fire. I heard horror stories how people just couldn’t kick the person out and had to spend money in courts getting him evicted. Such a pain.

I caution you against simply kicking him out without giving him days and fair warning. If he lives with you, it’s his residence. Even if he doesn’t pay rent, he lives there. If he doesn’t leave in a reasonable number of days, then take the next step