Tenant on lease wants 'evict' his roommate .
We have a tenant that has a roommate (his brother) that is supposed to pay rent too. I understand the tenant is responsible for paying the rent since he is the one on the lease however he wants his bro to move out because he is not paying his share. We want the person on the lease to stay but what can he do to get his brother out? As a landlord is there anything we can do, since our agreement is with the lessee and not with his brother? Or is it the lessee who has to 'evict' his bro? Many thanks in advance.