Chicago: Rules on tenants who are MTM after expired lease

[Gillian C.]

Hi Chicago folks. Could you shed light on the following scenario:

- Tenant on a year-long lease that ended August.

- Tenant continued to pay rent September and November. 

- No new lease was signed.

Two questions (one for a friend who is a tenant in this situation, and one for me as landlord next time I'm in this situation):

1) How much notice if any does the tenant have to give the landlord notice of move-out? If there is a minimum notice, what are repercussions for moving out without this notice?

2) How long does a landlord have to give a tenant on an expired lease that has become MTM notice that they must move out? I thought this was 60 days but was recently told it increased to 90? If the tenant is on a signed MTM lease, is this notice period the same or different?

Thanks all!