Tenant's friend taking appliances

[Xin Z.]

My tenant's lease is ending and he is moving out by the end of this month.  He changed the kitchen appliances while living there.

I mentioned to the tenant that I am planning to sell the house.  I was then contacted by his friend that he is interested in buying the house, but his offer price is lower than what I wanted.  He told me that he gave the kitchen appliances to the tenant, and if I don't sell the house to him, he will remove all the appliances.

I'd like to know if this is reasonable.  Your comments and suggestions are greatly appreciated.