erratic rent payment behavior

[Hanish Sampath kumar]

Currently my LTR has been managed by a PM. I just found out from the year end financial transactions , my tenant has been frequently late with rent payments, but some how pays the whole rent with late fee in fragments by the end of each month. He has been with us for 9 months never missed a month's payment so far. The lease renewal is up in a few months should I keep him or not renew the lease. I never suspected this late payments as my PM would consistently deposit the rent 15th of month in my account. I am also upset that I was not told about this by my PM until I read the financial transactions for the year. Need suggestions from the hive , thank you for your time.