Late rents ugh. Please help!

[Tony Velez]

We closed on a triplex in March. The old landlord informed us the first floor tenant is always late but always pays. I don't like the fact that he's late all the time. It's now March 9... He texted me and said he should have the tent by Thursday. I texted him back and said is like the rent by the 5th of each month going forward. I said just like you have a due date for the rent. I have a due date to pay the mortgage. He continued to apologize. 

Any suggestion on how to handle this??

Thank you

Tony