Negotiation tactics with seller 4 vacancies & rent non-payment.

[Rashmi Nigam]

Currently in escrow for a building in Tucson area. We signed the PSA towards end of March. With covid the rent collections have been lower for May. During initial PSA there were 4 vacancies but now with non payment, deferred payment we are looking at 17 units with issues out of 60 units.  There are also 5-6 more units that haven't paid rent for the last 5 months. This is on top of the vacant 4 units. What do you recommend that we go back to the seller with re: credits etc.. to share the risk?