Just like the title, my tenant bought a house and plans to move out at the end of the month. Long story short, we have a lease until 05/23. He and his family have been GREAT tenants. Upon renewing our annual lease, he brought up a concern that he could purchase a house in the near future, and I plainly said, "I wouldn't hold you and keep you if you're going to purchase a house." Now just six months into our lease, he notified me that he plans to purchase a house, and will close by the end of the month. 

My question is: "my tenant is willing to give me 200% of rent upfront for breaking the lease early vs. should I make sure he is responsible for payments until I find new tenants? FYI the property sits in a desirable area close to Tesla Gigafactory in Austin, TX. I'm guessing it shouldn't take two full months to rent out the property. Should I take the 200% of the rent upfront or make sure I cover my back and keep him accountable for the lease until I find new tenants? Thank you for your feedback.