You are neither the tenant nor the landlord. What is your position in this scenario? Regardless, you cannot immediately remove the tenant, and it is possible you do not have the authority to do it at all. A month to month tenancy has been established and the landlord must go through proper eviction proceedings to get the tenant removed. The landlord needs a lawyer. If the eviction is not handled properly, the process will have to be started all over again. The police cannot help.
Your question is confusing, but two things are clear.
You cannot call the police to kick out the tenant, they must be properly evicted through a court proceeding.
The landlord should hire a lawyer. Chicago law is very protective of tenants and a mistake by the landlord could cost him thousands of dollars in penalties.
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I agree with the excellent answers already given.
It may be helpful to know that many landlord tenant matters are successfully mediated and the key is finding out what is the best "win-win" scenario. As there is a language barrier of sorts, some effort might be made to translate the words spoken by both sides. Possible points to negotiate would be the timeline for the tenant to voluntarily surrender the premises and whether a reasonable amount of temporary rent could be paid in the meantime. A lawyer would be very helpful in drafting a written settlement of these issues.
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