Question about final month of occupancy and deposit

[Jerry Hill]

Need some advice. I have a tenant who has been with me for a year and has always paid on-time the full amount owed and has never been a problem. Enter the girl friend who moved in full-time within the last 3 months. Since she has moved in, I have cited him for a couple of lease violations (which was her fault). Last month, he gave me a 2 month notice that he was moving out. Now that we are in the last month, and the final months rent is due, he is telling me that he started a new job and he has been shortened on his pay and is asking to apply the deposit to the last months rent and that he will leave the apt. clean and tidy. 

What would you do?