I am trying to help a friend who has got into massive rent arrears (nine months). He is mentally disabled and there has been disrepair at the property for the previous two years. He has now vacated the property but has received some emails from his former landlord indicating that he might be pursuing the former tenant for the rent arrears. Given that my friend has lost mental capacity due having to live with the disrepair during Covid19 lockdown and has now abandoned the property, what is the worst that can happen? He is claiming disability benefits.