how to deal with a tenant who is hoarder

[Ashley Zhang]

I found this potential good deal, it is a multi-family at good location and good price. however when I asked the owner why did  he decide to sell it since he is a investor himself, he told me because one of the three units lives a hoarder. he paid rent on time, never late, but no one wants to live next door to him. there is 10 months lease left in the contract. should I walk away or any other creative way to get rid of people like that?

thanks !