Not renewing Lease - Process

[Andrew Oladipo]

In Dupage county IL, do I need to let a tenant (in writing or verbal) know I do not plan on renewing his lease? If yes, what is the process and timing to follow. Tenant has never missed a rent but does not take good care of the property. Plan is to keep him on a month-to-month with the hope of ending the relationship if things don't work out