broken rental lease, but landlord is selling house now?

I signed a year lease - then the landlord asked me to take it out for additional 4 months because he said it was hard to rent a house the month the 1 year lease would have been up. I could no longer afford to live there and gave a thirty day notice. I paid the last months rent and the landlord decided to put the house up for sale now. I have moved out, to a new house, more affordable and 40 miles closer to work. Now the landlord wants to sue me for the remaining balance on the lease. If he is now selling the house doesn't that mean he is now taking finaincial responsibilety for the house once again? Do I have any legal stand? Thank you