Agent not giving sufficient notice prior to entering unit?

[Ki Lee]

I’m under contract to sell my 3plex in Chicago.  The tenant notified my PM that the buyer’ agent entered the unit for showing to a prospective buyer after only 24 hour notification (48 hours is required by Chicago RLTO).  According to RLTO, the landlord who breaks this can be fined up to 1 or 2 months of rent.  

So the tenant is demanding this, the PM is pressuring me to abide by the request.

The listing agent is telling me that no lawyer is going to take this case and I should be closing on the property in 30 days, and then it will be over with. He recommended not giving any break to the tenant..  He apologized for not giving proper notice.  I guess he pushed the line a little bit in hopes of not losing promising prospective buyers...

What would you do? 

Thanks.