tenant's early termination of a lease is the amount due under the lease, less any offset or mitigation through a re-lease.
(i) A tenant in possession of a mobile home or lot who is not subject to a current lease on the effective date of this amendatory Act of the 95th General Assembly
shall be offered a lease by the park owner within 90 days after the effective date of this amendatory Act of the 95th General Assembly. Tenants in possession on the effective date of this amendatory Act of the 95th General Assembly
shall have 30 days after receipt of the offer for a written lease within which to accept or reject the offer, during which period the rent may not be increased or any other terms and conditions changed, except as permitted under this Act; provided that if the tenant has not so elected he or she shall vacate within the 30-day period.