Originally posted by @Patrick Moore:
Yes I mean cook county Illinois.
Patrick, be careful, Cook County is different than any other place the others above are familiar with.
If you go to eviction court, it's possible he could stay in your unit another 3-6 months (this has hurt many building owners in Cook County/S. Cook County). I agree with the gentleman above, reach out to an attorney ASAP to assure you're following the law; cash for keys may be your best bet to get the unit back, but if you misstep this process the tenant can sue you and will win b/c cook county is known to side w/tenants, be very careful.
Also, be careful about the security deposit, if there is one on-hand, and you don't return the proper amount, I've seen tenants sue for the actual rent amount for X number of months, even if your security deposit return is off by pennies.
If he owes you a lot of money, consider filing eviction, but it could take the sheriff 6-8 weeks before they come to the property, and then they have to actually be home to accept the sheriff... Again, cash-for-keys has worked for many owners if they just want to get the unit back. Also, 5-day notice is more customary than 10-day notice in this market, in my opinion.
Good luck Sir.