So he doesn't feel like paying what is owed in rent, but intends staying put for a bit longer?
Where does this boy get his ideas from?
NO pay, NO stay.
Let him know the old TC ain't around, and you either want his money or his space, it is up to him which. He has costs with moving in? Damn it, he has costs with moving out, and has got away with enough already.
He has got bludging down to a fine art form, but why should you pay out for him yet again, as if he deserved special treatment to ordinary humans?
Go and pamper yourself, and look at the bliss of no more cr*p from him.
God bless